Forests around the world will need to shift their ranges to adapt to climate change. But many trees and plants rely on animals to spread their seeds widely, and those partners are declining.
After 150 years of selective breeding in captivity, the domestic budgie would now be almost unrecognisable to its wild cousin. So who would win in the unlikely event of a fight?
Social media platforms have enabled wildlife traders to connect as never before. Some operate legally, within the boundaries of international laws. Others are less scrupulous.
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.
The little dinosaur is curled up inside its shell the same way birds do before hatching, shedding new light on the link between the behaviour of dinosaurs and modern birds.
Without changes, many birds will continue to decline or be lost altogether. But when conservation action is well resourced and implemented, we can turn the trend around.
The heaviest bird nest ever discovered weighed more than 2,000kg. It was built by bald eagles. The tiniest nest, built by a bee hummingbird, was just over 2cm wide.
Many living organisms generate and even detect static electricity in their natural environments. We must understand more to ensure we don’t disturb these delicate processes.
It’s still not known exactly how female birds produce such colourful and intricately-patterned eggs. But we do have some theories about the survival advantage this provides.
It’s been 80 years since the last undisputed sighting of the striking black-and-white bird. The U.S. government believes the ivory-billed woodpecker is extinct — but many will keep searching for it.