Most birds spend hours, days, or even weeks painstakingly building their nests. Some birds make nests out of mud, some build nests in trees, and some birds nest on the ground and simply scrape out a ...

Cuckoos, cowbirds, and other species outsource their parental duties. Scientists are uncovering new twists in this sneaky—and often treacherous—game of survival. By Sofia Quaglia / Knowable Magazine ...

Cuckoos sneak their eggs into other birds’ nests and copy egg colors to avoid detection. This study explains how they adjust to many hosts.

First determine if the baby bird is a nestling or fledgling. The arrival of spring brings many changes to our natural surroundings. Flowers bloom, barren trees fill with leaves, and occasionally, baby ...