Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.

The outer sheaths of birds’ beaks grow continually throughout their lives, but when they are properly aligned, the tips wear each other away and the beak stays straight and normal in length.

Modern birds are the living relatives of dinosaurs. Take a look at the features of flightless birds like chickens and ...

In Alaska during the mid-1990s, bird experts noticed an uptick in overgrown, warped beaks among black-capped chickadees. Now, using high-throughput RNA sequencing, researchers at the University of ...

That some of us still throw the term “bird brain” around as a barb points to poor cognition in our own species, not theirs.

In the avian world, birds showcase an incredible diversity of beaks—some enormous, others unusually long, and some even lethal. All hornbill species have a unique structure called a casque on ...

Under a microscope each long kingfisher barb, finer than a human hair ... At the river's edge two birds will lock beaks and attempt to force each other underwater. Breeding season requires ...