When the cuckoo chick hatches, it ejects other eggs or hatchlings to get all the space—and food—for itself. Hungry as a whole brood, the outsize baby devours everything brought by its foster ...

“Cuckoo” leans into the reliable horror trope that powered such classics as “Rosemary’s Baby”; that is, the woman who knows something is amiss, but no one believes her. This ...

Cuckoo spit - so named because it appears in spring when the cuckoo first calls - acts as protection, or bubble wrap, for the baby froghopper. Also known as a nymph, the baby froghopper taps into the ...