What is *The Genius of Birds* by Jennifer Ackerman about?

*The Genius of Birds* explores the remarkable intelligence of birds, challenging the misconception of “bird-brained” simplicity. Jennifer Ackerman showcases groundbreaking research on avian problem-solving, tool use, navigation, and social behaviors, from New Caledonian crows to bowerbirds. Blending global scientific fieldwork with engaging storytelling, the book reveals how bird brains rival primates in cognitive complexity.

Who should read *The Genius of Birds*?

Bird enthusiasts, nature lovers, and readers curious about animal cognition will find this book compelling. It appeals to both casual audiences and scientifically minded readers, offering accessible insights into avian intelligence without requiring a biology background. Fans of Ackerman’s prior work or authors like Sy Montgomery (*The Soul of an Octopus*) will enjoy its lyrical yet rigorous approach.

Is *The Genius of Birds* worth reading?

Yes. Acclaimed as a *New York Times* bestseller and praised for its “lyrical testimony to avian intelligence” (*Scientific American*), the book combines awe-inspiring science with vivid narratives. It’s ideal for readers seeking a fresh perspective on animal minds or those interested in how recent neuroscience reshapes our understanding of intelligence.

What are the main themes in *The Genius of Birds*?

Key themes include: - **Avian intelligence**: Birds’ problem-solving, memory, and tool-making abilities. - **Adaptation**: How species like the kea parrot thrive in changing environments. - **Social complexity**: Cooperative breeding, deception, and communication in bird communities. Ackerman emphasizes that intelligence in birds evolves contextually, tailored to ecological niches.

What key concepts does Jennifer Ackerman explore?

Ackerman highlights: - **Neuroplasticity**: Bird brains adapt rapidly, with some species possessing neuron densities surpassing primates. - **Cultural learning**: Vocal mimicry in mockingbirds and tool traditions in crows. - **Navigation**: Pigeons’ use of magnetic fields and olfactory maps for migration. The book redefines intelligence as diverse and situation-specific.

What are memorable quotes from *The Genius of Birds*?

- **“Birds are uniquely impressive machines”**: Ackerman reframes “bird-brained” as a compliment. - **“A lyrical testimony to the wonders of avian intelligence”** (*New York Times Book Review*). - **“The world is sharpened and sweetened by birds”**: A rallying cry for conservation.

Are there criticisms of *The Genius of Birds*?

While celebratory in tone, some reviewers note a focus on extraordinary avian feats over systematic analysis. Critics suggest deeper exploration of how bird intelligence metrics compare globally, though the book prioritizes accessible storytelling over dense academic critique.

How does *The Genius of Birds* compare to Ackerman’s *The Bird Way*?

*The Genius of Birds* focuses specifically on cognitive abilities, while *The Bird Way* (2020) examines broader behaviors like play, parenting, and communication. Both blend personal anecdotes with research but cater to slightly different aspects of avian biology.

鳥類感覚

ジェニファー・アッカーマン

4.04(13097 Reviews)

『鳥類感覚』の概要

「鳥頭」という言葉はもう忘れてください。ジェニファー・アッカーマンの絶賛された著作は、20以上の言語を通じて鳥類の天才的な能力を明らかにしています。グッドリーズ・チョイス・アワードにもノミネートされたこの科学的な新事実は、問題を解決するカラスや、卓越した歌声を持つ鳴禽類を紹介し、哺乳類以外の知性に対する私たちの理解を永遠に変えてしまいます。

語り方を選ぶ

1冊の本。さまざまな聴き方。

鳥類感覚の同じアイデアを、あなたに合う声・深さ・ペースで学べます。いつでも切り替えられます。

第1章

Feathered Einsteins: The Remarkable Intelligence of Birds

For centuries, birds were dismissed as simple creatures with tiny brains capable only of instinctual behaviors. Our language reflects this prejudice with derogatory terms like "bird brain" and expressions like "for the birds." Yet this view has been thoroughly debunked by modern science. Recent decades have revealed remarkable cognitive abilities across numerous bird species - from New Caledonian crows crafting sophisticated tools to scrub jays remembering thousands of food cache locations with pinpoint accuracy. Birds can recognize themselves in mirrors, plan for future needs, solve complex puzzles, and even understand basic physics. Some songbirds learn hundreds of different vocalizations through a process strikingly similar to human language acquisition. Jennifer Ackerman's "The Genius of Birds" explores this cognitive revolution, showing how birds have joined the elite club of highly intelligent animals alongside primates and dolphins. With over 10,400 species inhabiting virtually every environment on Earth, birds represent one of evolution's greatest success stories - and their remarkable mental abilities are a key part of that triumph.

第2章

Bird Brains: Small But Mighty

The old notion that birds had minimal brains devoted only to instinct has been thoroughly debunked. While birds evolved independently from humans for over 300 million years and have differently structured brains, some species have relatively large brains for their body size. More importantly, certain bird brains pack densities of neurons comparable to primates, with similar neural connections. For centuries, scientists dismissed bird intelligence based on brain size and structure. Ludwig Edinger's influential 19th-century theory placed birds low on an evolutionary ladder, claiming their clustered neurons (rather than layered cortex) limited them to instinctual behaviors. This prejudice persisted until the early 2000s when the Avian Brain Nomenclature Consortium revolutionized our understanding by renaming bird brain structures to reflect their true functions. Modern neuroscience reveals that bird brains, though structured differently from mammalian brains, contain similar neural circuits and use the same neurotransmitters. As Irene Pepperberg aptly puts it, mammalian brains are like PCs while bird brains are like Apples - different processing architecture but similar output capabilities. The key insight came when scientists counted neurons rather than measuring volume. In 2014, neuroscientist Suzana Herculano-Houzel discovered that parrots and songbirds pack surprisingly dense neurons in their forebrains, comparable to primates. A macaw's brain contains more neurons in its cortex-like regions than a macaque monkey's, despite being much smaller. This density explains how birds achieve remarkable cognition with compact brains. Birds' brains also show remarkable plasticity. Seasonal songbirds like canaries experience changes in brain structure throughout the year, with the high vocal center growing in spring and shrinking in late summer. Even more remarkably, birds can generate new neurons in adulthood - a process called neurogenesis that helps them learn new songs and adapt to changing environments. This neural flexibility supports various cognitive abilities: magpies recognize themselves in mirrors (suggesting self-awareness); scrub jays use Machiavellian tactics to protect food caches; jays demonstrate episodic memory; and songbirds learn tunes through processes remarkably similar to human language acquisition. Even newly hatched chicks demonstrate innate mathematical abilities, mapping numbers from left to right just as humans do.

聴きながら、すべての言葉を目で追えます

『鳥類感覚』の一語一語が音声に合わせてリアルタイムでハイライトされ、自然に読み進められます。

第3章

Tool Masters: The Technical Genius of Crows

New Caledonian crows stand as the undisputed tool-making champions of the bird world. When presented with food placed just beyond reach in a plastic tube, a crow named Blue methodically searches for materials, selects a branch, and crafts it into a straight tool by removing side twigs. He then uses this tool with remarkable dexterity to retrieve the meat, showcasing technical abilities that rival those of primates. These crows create two distinct types of hook tools: one from forked twigs they meticulously shape, and another from pandanus tree leaves. The pandanus tools come in three designs - wide, narrow, and stepped - with the stepped version being most sophisticated, featuring a sturdy gripping end that narrows to a flexible probing tip. Unlike other animal tools, the crow designs the complete shape before separating it from the leaf, suggesting they work from mental templates. What makes these abilities even more remarkable is that the crows aren't born master toolmakers. While they show some genetic predisposition toward tool use, creating complex tools requires adult guidance. Young crows like Yellow-Yellow observe their parents, borrowing and experimenting with their tools. Rather than mimicking movements, they attempt to copy the finished tools, which may explain regional toolmaking styles. Through trial and error over a year and a half, young crows progress from clumsy apprentices to skilled craftsmen. New Caledonia's unique environment likely fostered this remarkable ability. This ancient island, a remnant of Gondwanaland that emerged 37 million years ago, offers a hidden treasure - energy-rich beetle grubs and invertebrates burrowed deep in wood, with few competitors able to extract them. A crow can satisfy its daily energy needs with just a few of these protein-packed larvae, creating perfect conditions for tool innovation to evolve. The crows have even developed physical adaptations for tool use. Their eyes are positioned more frontally than other corvids, creating extraordinary binocular vision that helps with tool manipulation. They show eye dominance like humans, holding tools to favor their preferred eye. Their straight, conical bills - free of fancy hooks or curves - are perfectly designed to grip tools firmly. Scientists debate whether these physical adaptations preceded toolmaking or evolved in response to it, but the parallels to human adaptations like binocular vision and opposable thumbs that enable our own precise tool handling are striking. The New Caledonian crow represents a remarkable case of convergent evolution - developing sophisticated technical abilities independently from humans through different evolutionary pathways.

第4章

Social Savvy: Birds as Relationship Experts

Birds demonstrate complex social lives that rival our own, requiring sophisticated mental skills. The "social intelligence hypothesis" suggests that demanding social interactions drove the evolution of avian intelligence, just as they did in primates. Birds constantly evaluate relationships, track individuals, and make social calculations to navigate their communities effectively. Pinyon jays use transitive inference to determine social hierarchies - if jay Pete dominates Sylvester, and Henry dominates Pete, they can infer Henry dominates Sylvester without direct interaction. Male Eurasian jays demonstrate something approaching theory of mind by intuiting their mates' food preferences - when males observe females eating one type of larvae, they'll later offer the alternative treat, showing they understand specific desires different from their own. Birds excel at social learning, as demonstrated by the famous milk-bottle-opening tits of early 20th century Britain. In a recent experiment at Wytham Woods, researchers trained great tits to solve puzzles by sliding doors either left or right, then released them. The trained behaviors spread rapidly through social networks, with birds conforming to local traditions even when alternatives worked equally well. Birds that moved to new areas adopted the local technique, and the behaviors persisted for over a year, spreading to new generations. Some birds even demonstrate teaching behaviors. The southern pied babbler, a striking white and chocolate-colored bird from southern Africa's scrublands, lives in close-knit family groups where adults teach young to forage. Adults use special "purr" calls to attract chicks to food sources, then gradually reduce assistance as chicks develop skills - a textbook example of teaching that includes modifying behavior based on the learner's needs. Birds also show remarkable pair-bonding behaviors. Male budgerigars demonstrate commitment by perfectly imitating their mate's unique contact call after just days together. The female judges his courtship suitability by the accuracy of his imitation. This adaptation may explain the evolutionary origin of parrots' famous mimicry abilities. The neurobiology behind these social behaviors mirrors our own. Birds' social circuits use ancient molecules called nonapeptides (mesotocin and vasotocin, equivalent to human oxytocin and vasopressin) that date back 450 million years. Highly social birds like zebra finches have far more mesotocin receptors in brain regions controlling social behavior than their solitary relatives. Perhaps most remarkably, some birds demonstrate empathy-like behaviors. Rooks comfort distressed partners after conflicts through bill-twining, a form of "postconflict third-party affiliation" previously observed only in great apes, dogs and elephants. Ravens similarly console victims after intense fights, offering preening, bill-twining, and soft comfort sounds - behaviors that appear responsive to others' emotional needs rather than merely self-serving.

『鳥類感覚』をもっと深く楽しむ

毎日の新しい気づきを10万件以上のレッスンから
言葉をハイライトして音声と同期
ライブラリを保存して、どの端末からでも利用

第5章

Vocal Virtuosos: The Language of Birds

Birdsong represents one of nature's most sophisticated cognitive achievements. While all birds vocalize, there's a distinction between calls (typically short, simple, innate vocalizations like human laughter) and songs (generally longer, more complex, and learned). Nearly half of all bird species (about 4,000) are songbirds, with vocalizations ranging from bluebird chortles to complex wren duets. The remarkable vocal abilities of birds stem from a unique organ called the syrinx. Unlike the human larynx, this specialized structure sits deep in a bird's chest where the trachea splits to the bronchi. High-resolution imaging has revealed its complex architecture: delicate cartilage with two independently controlled membranes that vibrate at incredible speeds. This dual-membrane system allows gifted songbirds like mockingbirds to produce two different, harmonically unrelated notes simultaneously - creating acoustic complexity unmatched in nature. The mockingbird's imitative prowess is truly extraordinary. One specimen was documented producing twenty different imitations per minute. The famous Arnold Arboretum mockingbird of Boston mimicked thirty-nine birdsongs, fifty birdcalls, plus frog and cricket sounds. Native Americans aptly named them "Four Hundred Tongues," as they regularly imitate up to two hundred different songs. Scientists study vocal learning in zebra finches as model organisms for understanding complex learning processes. A baby zebra finch begins its vocal journey by listening. In the first two weeks, the nestling silently absorbs its father's song, forming a mental template as its brain develops seven interconnected regions specialized for song production. By the time the young bird attempts its first song, a memory of the tutor's song is already encoded in specialized neurons. In the second phase of learning, the young bird explores his voice with whispered, quavering notes - like a violinist testing his instrument. Within a week, he begins producing recognizable syllables in random order - a "subsong" comparable to human baby babbling. Over weeks and months, the bird rehearses tens or hundreds of thousands of times, listening for errors and correcting them. Each successful match to his memorized template releases dopamine and opioids - dopamine providing drive, opioids the reward. The parallels between bird song learning and human language acquisition are striking. Both involve critical learning periods, require social interaction, and depend on similar neural circuits. While birdsong lacks human syntax's complexity, it shares structural elements. Shigeru Miyagawa's theory suggests human language emerged from combining melodic components (like birdsong) with content-rich primate communication. Most compelling is the discovery that birds and humans use similar brain circuits for vocalizations, with analogous regions for perception and production. Erich Jarvis proposes these similarities represent convergent evolution - brain pathways for vocal learning may have evolved from motor control circuits in both birds and humans independently but yielding similar results.

第6章

Artistic Sensibilities: The Aesthetic World of Birds

In the Australian rainforest, male bowerbirds create stunning architectural and artistic displays purely to attract mates. These remarkable birds - which ornithologist Gilliard suggested should be classified separately from all other birds - are the only animals besides humans known to use objects in elaborate displays for courtship. A male satin bowerbird begins by clearing a yard-square area and distributing twigs to create a platform. From this collection, he selects choice twigs to plant in two neat rows forming an avenue positioned to catch the morning sun. He shows a strong preference for blue objects - collecting parrot feathers, flowers, fruits, along with blue glass, ribbons, toys, and even stolen baby-blue pacifiers. He arranges these artfully against his twig canvas, replacing withered flowers with fresh ones. He even paints the inside of his twig hall using crushed pine needles chewed in his beak. Different bowerbird species have preferred ornaments and colors: spotted bowerbirds favor green and shiny objects, even sorting items by quality; Vogelkop bowerbirds create elaborate displays with colored flowers and beetle wings; great bowerbirds use white backgrounds to highlight colorful objects and build complex avenues that may enhance the female's perception of the male's colors. Building a superior bower requires intelligence: choosing optimal locations (satin bowerbirds orient north-south for ideal illumination), crafting symmetrical walls using hundreds of uniform sticks, and collecting appropriate decorations. Males use "templating" - precisely positioning sticks to ensure symmetry - and can adapt their building strategies when experimenters destroy parts of their bowers. Beyond architecture and decoration, sensitivity proves crucial for successful courtship. Gail Patricelli discovered that female satin bowerbirds prefer males who balance intensity with restraint. Using an ingenious "fembot" (a motorized female bowerbird model), she found that males vary greatly in their attentiveness to female responses. The most successful suitors moderate their displays when females appear alarmed, tempering wing-flipping and maintaining appropriate distance. These complex behaviors aren't innate but learned - young males initially build "rotten bowers" with inappropriately thick sticks and poor structure, improving through observation and practice. Juveniles even work on communal "practice" bowers, though not collaboratively. Female bowerbirds' extreme selectivity serves a purpose: they use a male's entire display as a comprehensive intelligence test. Each element reveals different qualities - blue decorations indicate competitive ability, snail shells suggest age and survival skills, mimicry demonstrates learning capacity, and bower construction shows motor coordination. Together, these traits form a complete picture of genetic fitness, particularly cognitive ability. Do birds possess an aesthetic sense comparable to humans? Shigeru Watanabe's research offers intriguing evidence. His experiments showed pigeons could distinguish between Picasso and Monet paintings and even generalize to other artists of similar styles. In another study, pigeons successfully differentiated between "good" and "bad" paintings as judged by human critics. Birds are highly visual creatures with remarkable abilities - their visual systems may even surpass humans', with four types of color-sensitive cone cells (versus our three) and sensitivity to ultraviolet light.

聴きながら、すべての言葉を目で追えます

『鳥類感覚』の一語一語が音声に合わせてリアルタイムでハイライトされ、自然に読み進められます。

第7章

Navigational Wizards: The Mapping Mind of Birds

Imagine being kidnapped from your journey, blindfolded, and transported thousands of miles away with no GPS or maps - could you find your way home? This is essentially what happened to white-crowned sparrows in an experiment, yet the adult birds immediately oriented themselves and set off toward their wintering grounds in Southern California. This remarkable spatial intelligence demonstrates birds' extraordinary navigational abilities that far surpass human capabilities. Much of our knowledge about avian navigation comes from studying homing pigeons. These birds are trained by progressive releases from unfamiliar locations at increasing distances from their lofts. Eventually, they reliably return from up to a thousand miles away, flying over unknown terrain at average speeds of fifty miles per hour. Even more astonishing are the migrations of birds like the blackpoll warbler, which flies nonstop over 1,700 miles across the Atlantic in just 2-3 days, or the Arctic tern, which completes a 44,000-mile annual round trip between Greenland and Antarctica - equivalent to three moon trips in its 30-year lifetime. Birds appear to use a sophisticated "map-and-compass" strategy: first determining their position relative to home, then using environmental cues to maintain direction. This system incorporates multiple information sources including sun, stars, magnetic fields, landscape features, and weather. While pigeons primarily use visual landmarks for the final approach to their loft and rely heavily on the sun as a compass (calibrating to its 15-degree hourly movement), they can still navigate with impaired vision and under overcast conditions. Earth functions as a giant magnet with field lines emanating from its poles, and birds can detect minute changes in the magnetic field's inclination to determine their latitude. The exact location of birds' magnetoreceptors remains mysterious - possibly somewhere in the upper beak close to the skin, or perhaps tiny iron balls inside inner ear hair cells. Whatever the mechanism, it's extraordinarily sensitive - even weak electromagnetic "noise" from everyday electronic devices can disrupt migrating European robins' magnetic compasses. Beyond compass capabilities, birds need something like a map to determine their position and relationship to their destination. "Scatter-hoarding" birds like Clark's nutcrackers excel at spatial memory - a single bird can gather over 30,000 pine seeds, cache them in up to 5,000 different locations across hundreds of square miles, and retrieve them with 70% accuracy months later despite seasonal landscape changes. Western scrub jays demonstrate even more remarkable memory capabilities, remembering not just where they cached food but what they stored and when. Nicola Clayton's experiments at Cambridge showed the jays retrieve perishable food before it rots, suggesting they possess episodic-like memory of specific past events - the what, where, and when of their caching activities. Further experiments indicate they can plan ahead, caching food in locations where they anticipate being hungry the next day. The mental map in a pigeon's brain resides in the hippocampus, just as in humans. While a human's hippocampus is buried deep within the temporal lobe, a bird's sits atop the brain like a button. A pigeon's hippocampus size reflects its navigational experience, shaped by use rather than genetics. Scientists demonstrated this by comparing twenty homing pigeons - half allowed to fly freely and participate in races, half confined to a spacious loft. The navigating pigeons developed hippocampi 10% larger than their confined counterparts. Birds' navigational maps likely function like coordinate systems with environmental gradients providing latitude and longitude information. The sensory cues forming these maps remain debated. Geomagnetic sensing appears crucial, but scent may also factor into avian navigation maps. Anna Gagliardo's research with Cory's shearwaters demonstrated this dramatically - birds with temporarily disabled smell receptors became completely disoriented and wandered the ocean for weeks, while birds with scrambled magnetic senses still found their way home.

第8章

Adaptive Geniuses: Birds in a Changing World

As birds face unprecedented habitat changes in the Anthropocene, some species adapt while others perish. House sparrows exemplify the ultimate avian adapters - from their introduction to North America in the 1850s, they rapidly colonized environments from Death Valley to the Rocky Mountains, spreading across continents and adapting to vastly different conditions. House sparrows demonstrate remarkable behavioral innovation, from gleaning insects from car radiators to foraging at night around Empire State Building floodlights eighty stories up. In Louis Lefebvre's study of innovative bird behaviors, most species had only one innovation while house sparrows boasted forty-four. They nest in unusual locations - including working oil pumps that seesaw constantly - and use novel materials like feathers plucked from living pigeons and cigarette butts, which effectively repel parasites with their nicotine and pesticide residues. Unlike most vertebrates that fear strange objects or ignore them, house sparrows actually seem attracted to novelty. When researcher Lynn Martin tested their response to rubber balls and toy lizards placed near food, sparrows were more likely to approach feeding dishes with these novel objects present - the first recorded instance of a non-human vertebrate being drawn to novelty rather than repelled by it. The house sparrow's success comes from a simple recipe: a taste for novelty, a pinch of innovation, a dash of daring, and a penchant for hanging out in mixed social groups. Combined with its love for widespread habitats and ability to brood multiple times in a breeding season (a bet-hedging strategy that reduces costs of failed breeding attempts), the sparrow becomes a consummate adapter that easily switches to new foods, foraging strategies, or unorthodox nesting sites. Other synanthropes like pigeons, crows, and some small songbirds also thrive in cities despite dangers like cars, electrical lines, and windows. Daniel Sol's research identified "true urban exploiters" that achieve higher densities in cities than natural areas, particularly among crow, blackbird, and pigeon families. These successful urban birds share traits like large brains and the ability to handle strange foods, traffic hazards, perpetual light, and noise. Birds that struggle in urban environments are those unlike sparrows - the skittish, inflexible specialists with small brains. Studies in UK farmlands over thirty years showed dramatic declines in small-brained species like warblers and tree sparrows, while large-brained magpies and tits fared well. Research in Costa Rica revealed that in disturbed landscapes, most birds were closely related species that evolved recently and adapt easily to change (primarily sparrows and blackbirds). Even relatively intelligent birds face serious climate threats. The mountain chickadee, despite its cognitive abilities, may lose 65 percent of its mountain conifer forest habitat in the next half-century. Warming could diminish these birds' cognitive abilities - chickadees at higher elevations have larger brains due to harsh winter conditions requiring better spatial memory. With warmer winters providing less selection pressure, these birds may lose their cognitive edge as maintaining better memory becomes disadvantageous. Intelligence isn't always universally advantageous - there are trade-offs to being quick-witted. Bold birds that solve problems rapidly may sacrifice accuracy for speed. In Barbados, Simon Ducatez found that faster Carib grackles performed worse on reversal learning tests than their slower, more methodical counterparts. Both cognitive styles persist within populations, perhaps because different approaches succeed under different environmental conditions - demonstrating why cognitive diversity, as seen in sparrows, is advantageous for species survival in our rapidly changing world.

★★★★★

『鳥類感覚』を最後まで読み終えました

100万人以上の学習者に愛用されています

“23日間、毎日使い続けています。今では日課の一部です。”

jayallen

『鳥類感覚』の主要テーマ

avian cognition
animal tool use
evolutionary neuroscience
bird behavior
comparative intelligence

『鳥類感覚』の名言

Birds can recognize themselves in mirrors, plan for future needs, solve complex puzzles, and even understand basic physics.
Birds constantly evaluate relationships, track individuals, and make social calculations.
Mammalian brains are like PCs while bird brains are like Apples - different processing architecture but similar output capabilities.
The old notion that birds had minimal brains devoted only to instinct has been thoroughly debunked.
Birds have joined the elite club of highly intelligent animals alongside primates and dolphins.

『鳥類感覚』の登場人物

Jennifer AckermanAuthor and explorer of avian cognitive science
Ludwig Edinger19th-century scientist with theories on brains
Irene PepperbergScientist who compares bird and mammalian brains
Suzana Herculano-HouzelNeuroscientist who studied avian neuron density

著者について

ジェニファー・アッカーマン（Jennifer Ackerman）は、ベストセラーとなった『鳥類学者、無謀にも恐竜を飼う（原題: The Genius of Birds）』の著者であり、複雑な鳥類学の研究を魅力的な物語へと昇華させることで知られる著名なサイエンスライターです。イェール大学を卒業し、30年以上のキャリアを持つアッカーマンは、緻密な科学的分析と鮮やかなストーリーテリングを融合させることで、鳥類の知能に対する認識を覆してきました。『ナショナルジオグラフィック』、『サイエンティフィック・アメリカン』、『ニューヨーク・タイムズ』などへの寄稿は、自然および生物学ライティングにおける彼女の権威を裏付けています。

『ニューヨーク・タイムズ』のベストセラーとなった『鳥類学者、無謀にも恐竜を飼う』（2016年）は、世界各地の研究と観察に基づく洞察を通じて鳥類の認知能力を再定義し、アッカーマンをポピュラーサイエンスの第一人者として確立させました。彼女はこれらのテーマを『鳥たちの驚異的な道（原題: The Bird Way）』（2020年）や『フクロウの知られざる世界（原題: What an Owl Knows）』（2023年）でさらに広げ、鳥類の行動や生態を深く探求しています。また、『人はなぜ眠るのか、なぜ食べるのか（原題: Sex Sleep Eat Drink Dream）』や『風邪の科学（原題: Ah-Choo! The Uncommon Life of Your Common Cold）』といった初期の著書は、ヒトの生物学を分かりやすく解説する彼女の才能を反映しています。

20以上の言語に翻訳されている彼女の著作は、厳格な学術的知見と野生動物への情熱を兼ね備えており、『ニューヨーク・タイムズ』の「エディターズ・チョイス」への選出や、「Books for a Better Life Award」のファイナリストに選ばれるなど、高い評価を得ています。

鳥類感覚の要約をダウンロード

鳥類感覚の要約をPDFまたはEPUBで無料でダウンロード。印刷やオフラインでいつでもお読みいただけます。

他のユーザーのお気に入り

The Bird Way

Jennifer Ackerman

Genius of Dogs

Brian Hare & Vanessa Woods

Are We Smart Enough to Know How Smart Animals Are?

Frans de Waal

Matt Merritt

Carl Safina

Peter Godfrey-Smith

David Eagleman

Thor Hanson

この本に関するよくある質問

この学習プランの一部

学習プラン

Learn about pigeons

3 h 28 m•3 エピソード

学習プラン

The Architecture of Choice

This plan bridge the gap between neuroscience and behavioral economics to reveal how our brains navigate social structures. It is ideal for leaders, strategists, and behavioral scientists looking to master the mechanics of human influence and group decision-making.

1 h 12 m•3 セクション

学習プラン

General intelligence

Intelligence isn't fixed—it's a set of skills you can systematically develop and optimize. This learning plan is ideal for professionals, students, and lifelong learners who want to enhance their cognitive abilities, think more clearly, and learn more effectively using science-backed methods rather than myths or pseudoscience.

5 h 13 m•4 セクション

学習プラン

The Biology of Moral Choice

This learning plan bridges the gap between neuroscience and ethics to reveal how our brains dictate our sense of right and wrong. It is essential for legal professionals, psychologists, and anyone interested in the biological roots of human behavior and accountability.

3 h•6 セクション

学習プラン

Project genius confidence via psych tricks

This learning plan bridges the gap between internal self-worth and external perception through science-based psychological strategies. It is ideal for professionals and social navigators looking to project authority and maintain composure in high-stakes environments.

5 h 50 m•4 セクション

学習プラン

understanding the human brain and love

This plan bridges the gap between neuroscience and emotional intelligence, offering a scientific lens on why we love and connect. It is ideal for individuals seeking to improve their relationships by understanding the biological and psychological roots of human behavior.

5 h 28 m•4 セクション

学習プラン

The Human Book: Decoding Hidden Intent

In an era of complex communication, understanding what remains unsaid is a critical competitive advantage. This plan is essential for leaders, negotiators, and recruiters who need to master behavioral baselines, facial analysis, and linguistic markers to navigate high-stakes interactions.

1 h 30 m•3 セクション

学習プラン

The Rocket Scientist's Reading Workflow

In an era of information overload, the ability to rapidly digest and apply complex technical knowledge is a competitive superpower. This plan is designed for high-performers and lifelong learners who need to master new domains quickly using engineering-grade mental models.

1 h 30 m•3 セクション

学習プラン

The Birth of Wisdom

This plan bridges the gap between ancient logic and modern existential critique, offering a powerful toolkit for independent thought. It is ideal for students of philosophy, debaters, or anyone seeking to liberate their mind from conventional biases.

1 h•2 セクション

コロンビア大学卒業生がサンフランシスコで開発

LOVED BY

1,000,000+ curious minds.

4.7

avg rating

1M+ learners

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

BeFreedがウェブ上でどのように話題になっているかをもっと見る

コロンビア大学卒業生がサンフランシスコで開発

LOVED BY

1,000,000+ curious minds.

4.7

avg rating

1M+ learners

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

BeFreedがウェブ上でどのように話題になっているかをもっと見る

今すぐ学習の旅を始めよう

第7章

鳥類感覚

概要『鳥類感覚』の概要

1冊の本。さまざまな聴き方。

Feathered Einsteins: The Remarkable Intelligence of Birds

Bird Brains: Small But Mighty

聴きながら、すべての言葉を目で追えます

Tool Masters: The Technical Genius of Crows

Social Savvy: Birds as Relationship Experts

『鳥類感覚』をもっと深く楽しむ

Vocal Virtuosos: The Language of Birds

Artistic Sensibilities: The Aesthetic World of Birds

聴きながら、すべての言葉を目で追えます

Navigational Wizards: The Mapping Mind of Birds

Adaptive Geniuses: Birds in a Changing World

『鳥類感覚』を最後まで読み終えました

『鳥類感覚』の主要テーマ

『鳥類感覚』の名言

『鳥類感覚』の登場人物

著者について

鳥類感覚の要約をダウンロード

他のユーザーのお気に入り

この本に関するよくある質問

What is The Genius of Birds by Jennifer Ackerman about?

Who should read The Genius of Birds?

Is The Genius of Birds worth reading?

What are the main themes in The Genius of Birds?

この学習プランの一部

Learn about pigeons

もっと見る

1,000,000+ curious minds.

1,000,000+ curious minds.

1冊の本。さまざまな聴き方。

Feathered Einsteins: The Remarkable Intelligence of Birds

Bird Brains: Small But Mighty

聴きながら、すべての言葉を目で追えます

Tool Masters: The Technical Genius of Crows

Social Savvy: Birds as Relationship Experts

『鳥類感覚』をもっと深く楽しむ

Vocal Virtuosos: The Language of Birds

Artistic Sensibilities: The Aesthetic World of Birds

聴きながら、すべての言葉を目で追えます

Navigational Wizards: The Mapping Mind of Birds

Adaptive Geniuses: Birds in a Changing World

『鳥類感覚』を最後まで読み終えました

他のユーザーのお気に入り

この学習プランの一部

Learn about pigeons

もっと見る

『鳥類感覚』の概要