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 ...

Nest building is costly. It requires time, energy, and constant defence from predators. For birds that raise their own young, this investment makes sense because it ensures survival of their chicks.

Clever birds figure out how to trick others into raising their kids A common Cuckoo chick in Reed Wablers nest waits to be fed with its mouth wide open, in this undated file photo. Getty Images — ...

Common cuckoo (Cuculus canorus) in flight. This is an adult male: Grey morph adult females have a pinkish-buff or buff background to the barring and the sides of the neck, and sometimes small rufous ...

Cuckoos – which lay their eggs in nests of other birds – have higher speciation rates when they lay their eggs in a broader range of host bird species’ nests, a new study reports. This higher ...

There are plenty of birds that are widely referenced in popular culture today, whether as a sports team name or as the origin for an ubiquitous turn of phrase—looking at you, ugly duckling. But few ...

Birders are going cuckoo for a rare sight on Long Island. The common cuckoo bird has been spotted only four times in U.S. history in the lower 48 states, experts say. Now, it's in Riverhead. Hundreds ...

A bird sighting on New York's Long Island has avian enthusiasts flocking to the region in hopes of spotting a feathered friend that has never been seen before in the state. The common cuckoo is ...

When a bird rarely seen on this continent showed up in Riverhead last month, the reaction was, as might be expected, a little cuckoo. Native to Eurasia, the bird is anything but common here: It ...