Quail eggs are like fingerprints, a new study suggests. The creamy blue-and-brown speckled eggs, splashed like a toddler's art project, vary among birds but are consistently patterned for individuals.

For some birds, recognising their own eggs can be a matter of life or death. Scientists have used imafe recognition technology to show that birds defending their nests against the Common Cuckoo - ...

I’ve described this effect before. Video is an illusion; it’s really a series of still images that are shown so rapidly our eyes and brain interpret them as continuous motion. If you can time some ...

Cuckoo—host interactions provide classical examples of coevolution. Cuckoos place hosts under selection to detect and reject foreign eggs, while host defences result in the evolution of host-egg ...