Female adult Common Cuckoos appear in two color morphs, shown here as half of the rufous (hepatic) form (left) and half of the gray morph (male-like, right). Several species of cuckoos, a genus of ...
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 ...
Bronze-cuckoo nestlings on the left with the nestlings of their hosts on the right. TOP ROW: little bronze-cuckoo, host large-billed gerygone. SECOND ROW: shining bronze-cuckoo, host yellow-rumped ...
The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. How do new species arise? And why are there so many of them? One possible ...
The cuckoo lays its eggs in the nest of an unwitting host species and after hatched, the parasite nestling often evicts the host eggs or young, ensuring maximum resources for itself. While some hosts ...
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