For some birds, recognizing their own eggs can be a matter of life or death. In a new study, scientists have shown that many birds affected by the parasitic Common Cuckoo -- which lays its lethal ...

Research looks at the evolutionary pathways to differences in bird plumage patterns between males and females -- and concludes that birds are able to adapt their appearance with remarkable ease.

Larger-bodied migratory birds are reproducing less, while sedentary species of small-bodied birds tend to produce more offspring under similar conditions, according to an international study focused ...

When you first see Shaun Kardinal’s amazing bird photos, you wonder just what's going on. His images show birds flying in complex patterns---squares, spirals, even circles---you’ve never seen before, ...

Just in time for World Migratory Bird Day, May 10, an article in the April issue of Animal Behaviour explores the impact of shifting migration patterns in one population of migratory birds. An ...

The dark, smudgy streaks on Xavi Bou's photographs suggest the jerky ink tracks created by a malfunctioning printer, but they actually record the various patterns birds trace while flying in flocks.

National Bird Day 2025 highlights how bird population changes reveal environmental stress and ecosystem health worldwide.