European cuckoos lay very different eggs depending on the host species. Genetic analyses have revealed how this adaptation is inherited without leading to speciation. Subscribe to our newsletter for ...

Captivating with their bright, vivid and brilliantly metallic bodies, the cuckoo wasps are also fascinating with their curious lifestyle, which has given them this common name. However, in terms of ...

Brood parasites are some of the bird kingdom’s most notorious sneaks. They don’t rear their own young but instead pawn the task of child care off onto other species without their knowledge. Instead of ...

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, ...

A bird that made a big impression on me this year was a young yellow-billed cuckoo making what may have been its first long flight since leaving its nest. Just a few hours or maybe a day after ...

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 ...

Captivating with their vivid, brilliantly metallic bodies, the cuckoo wasps are also fascinating with their curious lifestyle, which has given them this common name. However, in terms of their ...