“Common, but its behavior is not ... Having used her scream to paralyze the human female, she presumably inserts this cuckoo goo into the woman's uterus. When the male human’s sperm fertilizes ...

This story appears in the January 2018 issue of National Geographic magazine. For the care and feeding of its offspring, the common cuckoo outsources. When she’s ready to lay an egg, a female ...

The U.S. Fish and Wildlife Service proposed today to protect Suckley’s cuckoo bumblebees under the Endangered Species Act. This decision comes in response to a petition and legal action by the Center ...

Cuckoos are more common in the Republic of Ireland ... such as dunnocks and meadow pipits. When a female cuckoo finds a suitable nest, and the hosts aren't looking, she removes one of their ...