It appears to be widespread among all sorts of different birds.
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Canada jays who are able to expel their siblings from the nest and home territory have better chances of survival.
The only other species known to do this are humans and chimpanzees.
Our study found it wasn’t cafes with access to sugar-rich food that led to more miner aggression. In fact, gardens were where we recorded the highest amount of aggressive behaviour.
We compared 4,500 species of songbird to finally confirm what Darwin suspected.
The hidden social lives of fairy-wrens are just as complex as those of animals with much larger brains, including monkeys, whales and even humans.
Corvids and parrots might be the superstars of the bird world - but other species like gulls, geese and even chicken have shown some impressive skills too.
From choosing a compatible personality to sharing childcare equally, many Australian birds have mastered the art of successful relationships.
The natural world is full of intriguing clues.
Magpies have such good hearing, they can hear the very faint sound of grass roots being chewed.
Kontributor teratas
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Emeritus Professor in Animal Behaviour, University of New England
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Senior Lecturer, University of Sheffield
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NERC Independent Research Fellow, University of Sheffield
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Professor of Evolutionary and Conservation Biology, Australian National University
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Professor of Animal Behaviour, University of New England
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Research Affiliate, School of Anthropology and Museum Ethnography, University of Oxford
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PhD student, Monash University
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Associate Professor in Behavioural Biology, Anglia Ruskin University
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PhD Student, University of Adelaide
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Instructor, Integrative Biology, University of Guelph
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Post-doctoral Research Assistant, Institute of Evolutionary Biology, University of Warsaw
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Research Fellow, ELKH-DE Conservation Biology Research Group., University of Debrecen
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Assistant Professor in Ornithology and Animal Conservation, University of Birmingham
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Professor, Monash University
