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 ...

Female lineages of European cuckoos lay eggs with colorful shells and intricate patterns specialized to deceive more than 100 avian hosts into fostering their chicks. Parasitic cuckoo eggshells show ...

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 ...

A swarm of birders flocked to Long Island after an exceptionally rare cuckoo bird was spotted by a golfer, according to reports. Hundreds of people traveled from dozens of states to Vineyards Golf and ...

European cuckoos lay very different eggs depending on the host species. Genetic analyses have revealed how this adaptation is inherited without leading to speciation. Bright blue, white, greenish, ...