Individuals of the European robin tend to be slightly larger in northern France than in the south.
Climate change is affecting our planet's biodiversity, yet some species can find ways to adapt. Using citizen-science data, a French research team is studying how birds adjust to local heat levels.
Yellow-headed Blackbird in flight over cattails in a prairie marshland in Alberta.
The Canadian Prairies are vanishing more quickly than the Amazon rainforest as they are converted for agriculture and industrial uses.
The New Zealand robin is a small and ordinary-looking songbird, but it can take down enormous invertebrate prey and hide morsels for later consumption.
The New Zealand robin has learnt to hide left-over food for later consumption, and it turns out that male birds with the best spatial memory have the greatest breeding success.
Vocal learning in birds is a lot like how people learn language.
Could mating preferences, like females preferring males who sing complex songs, affect the evolution of learning? Insights from birds could have clues for how people learn throughout their lives.
A pair of Seychelles Warblers tend to their chick.
Janske Van De Crommenacker
Why some individuals age faster than others is a mystery, but new research suggests help with childcare is significant.
Bank swallows, like this juvenile, may become endangered unless habitat loss and other threats are reduced.
A collection of millions of bird sightings has identified the best places to invest in conservation.
The mouse who tidied the shed he lives in fascinated human viewers, but cleanliness isn't a virtue unique to humans.
Male collared flycatcher, singing for multiple females.
Biologists investigated whether birds that search for multiple mates would evolve ever more elaborate songs to attract them. What they found might have surprised Darwin.
A red-listed skylark.
One gram of songbird meat is estimated to sell for the equivalent of one gram of marijuana.
Robins are a much loved Christmas icon, but wind turbines installed in their habitat are affecting their song, with worrying consequences.
A Northern Spotted Owl in Oregon’s Deschutes National Forest.
AP Photo/Don Ryan, File
The Trump administration wants to step up logging, saying it will benefit wildlife by reducing forest fire risks. But wildfires create habitat for threatened Spotted Owls and many other species.
Both male and female birds sing to impress other birds, but as well as that, they do it for pleasure!
Male Rockjumper in the Swartberg mountains.
The number of Cape Rockjumpers' are declining and the reason might be the weather.
Like many migratory songbirds, tree swallows are experiencing population declines in parts of their breeding range.
Effective conservation of migratory songbirds requires an understanding of how populations are connected between seasons. The challenge is being able to track individuals throughout the entire year.
Male Savannah Sparrow.
In our increasingly noisy world, how do you make sure that your voice is heard? If you’re a bird, that depends on the type of noise and what you’re trying to say.
New research reveals how birds navigate their way over thousands of miles.
Pied butcherbirds, such as this one, sing solos, duos and trios.
© Duade Paton
Is birdsong simply a hard-wired, functional, primitive sound – or could we call it 'music'? Australia's pied butcherbirds show there are surprising overlaps between birds' and humans' musical abilities.
The European goldfinch, with its wonderful coloration and melodic singing, is a favoured pet for people living in the western Maghreb. But continued poaching is putting the species in danger.
New research shows that fairy-wrens become more cautious as they change colour.
Being blue is risky for superb fairy-wrens: males become more cautious when their plumage turns blue, and other wrens take advantage by using them as colourful decoys.
Red-breasted Nuthatches are irrupting this winter across North America.
Heather Elaine Ritchie/Flickr
During bird irruptions, hundreds or thousands of a single species show up outside their normal territory. Most of what we know about irruptions comes from data collected by citizen scientists.