ornithology Altruistic birds foil scientists by helping each other yank off tracking devices David Pescovitz

photography Video shows the shape of a flock of starlings evading a hawk Clive Thompson

animals This is the world's loudest bird David Pescovitz

birds Where did this rare Mandarin duck in New York City's Central Park come from? David Pescovitz

Science Super-fancy bird may comprise a second species Andrea James

music When birds sound like heavy metal and hardcore vocalists Rusty Blazenhoff

birds 'One in a million' yellow cardinal sighted at backyard feeder Rusty Blazenhoff

Science These woodpeckers are so weird scientists thought they were communists Andrea James

Audio Watch ultrasensitive microphones barely register owls flying Andrea James

Delightful Creatures Watch: Andean condor reunited with the man who saved it Elías Villoro

gyre Floating garbage patches largely comprised of trash dumped off ships Jason Weisberger

Delightful Creatures Beauties from the 2017 Bird Photographer of the Year Awards Andrea James

Science Gorgeous and fascinating look into the science of animal schooling Andrea James

A rare California Condor chick just hatched on the internet. Watch it emerge via webcam. Xeni Jardin

offworld Divebomb your friends in this elegant bird-jousting game Laura Hudson

animals Animal sounds yours for the listening Rob Beschizza