Ethology

Interview

Regina Macedo: Biologist reformulates view on bird behavior

São Paulo native from UnB who helped revise concepts about sexual selection in the tropics and cooperative breeding has dedicated herself to another passion since last year: painting

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Behavior

How babies and other primates use touch

Human and chimpanzee babies both touch adult faces as a way of creating emotional bonds

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ETHOLOGY

Morpho butterflies seem to disappear thanks to iridescent blue color

The coloration, present only on the upper surface of the wings, causes a flash that confuses predators, as well as biologists seeking to understand how they became so bright

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Ethology

Wolves domesticated themselves in search of food

Wild wolves approached humans in search of food and domesticated themselves

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Animal behavior

Social isolation leads to disorders

Chimpanzees raised in isolation face challenges in social interaction

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Animal behavior

Brains connected by a look

Eye contact and affection strengthen bond between dogs and humans

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Cover

The challenge of understanding what animals feel

Strategies created to measure pain and try to decipher animals’ emotions

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Ethology

Canine expressiveness

Canine from Africa may have the same expressive features as domestic dogs

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Ethology

Underground amphibians produce “milk” to feed their young

Study published in Science describes nursing behavior in caecilian species found in Brazil

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Communication

Brazilian researcher wins award for dance about kangaroos

Doctoral student’s music video sharing the results of his research in Australia won the international Dance Your Ph.D. competition

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Ethology

Communication and diet different in urban primates

Pied tamarins in Manaus use smell to complement vocalizations, while howler monkeys in Rio Grande do Sul add barbecue to their vegetarian diet

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INTERVIEW

Maria Esther Maciel: In counterpoint to the mechanization of life

The acclaimed writer and researcher has completed a trilogy on the place of animals in contemporary society

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Animal behavior

Observe, then approach

Dogs choose who to interact with based on body language and facial expressions

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Photolab

The harvestman with eight canes

Of all the harvestman species found in Brazil, Giupponia Chagasi is the best adapted to living in caves—a trait known as troglomorphism

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Zoology

Cooperation between parrots

Biologists have discovered possible evidence of cooperative behavior among birds that has previously only been observed in mammals

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Video

These parrots use probability to get food

Biologist Amalia Bastos shows that birds from New Zealand can make calculations that so far only humans and chimpanzees were known to use

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Interview

Vera Lucia Imperatriz Fonseca: The vast world of bees

For 20 years, the biologist has defended the role of pollinators in conserving native forests and expanding agricultural production

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Ethology

High-altitude flight

The bar-headed goose is capable of flying at great heights

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Ethology

Changes in primate culture

Capuchin monkeys (Sapajus libidinosus) living in Serra da Capivara National Park in Piauí 3,000 years ago knew how to break and crush fruits and seeds using stones

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Video

Characterizing ecosystems through sound

Acoustic information portrays environments and set natural changes apart from those caused by human action | 7'46"

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Zoology

Bees capable of adding and subtracting

Apis mellifera bees can learn to recognize quantities

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Zoology

Orangutan mother alerts infant of danger after spotting a “tiger”

Primate makes a noise that sounds like a kiss to warn its offspring

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Biology

The chemical language of insects

Within colonies, bees and ants recognize each other and organize themselves through compounds that cover their bodies

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ETHOLOGY

Primate culture

Transmission of tool-use practices among capuchin monkeys helps redefine the role of traditions in evolution

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CHRONOBIOLOGY

A clock that works in the dark

Researchers come together to reveal the circadian rhythms of tuco-tucos

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BIOLOGY

The chemical language of insects

Bees and ants recognize each other through compounds that cover their bodies

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Ethology

Primate culture

Traditions dictate the use of tools among the monkeys of Piauí

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biodiversity

Tiny spiders have different mechanisms for recognizing colors

Tiny spiders have different mechanisms for recognizing colors

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Chronobiology

Chronobiology: rhythms and cycles

Physics, biology and technology unite to unravel a rodent's circadian rhytms

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Ethology

How capuchin monkeys break open cashew nuts

Capuchin monkeys have special technique to break open cashew nuts

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