5 birds ending with the letter O — each with origin, classification, and notes.
This page lists birds that end with O. 5 birds are detailed below. Each entry below is a doorway into a full profile — not just a name on a list.
A loud, intelligent Australasian parrot with a distinctive crest of feathers — including the most affectionate parrot species and some of the most ecologically destructive flocks, with several species critically endangered.
A medium-sized bird famous for its distinctive call (the basis of cuckoo clocks) and brood parasitism — laying eggs in other species' nests to be raised by unwitting foster parents.
A long-legged wading bird whose pink color comes from carotenoid pigments in its food, famous for filter-feeding upside-down and standing on one leg.
A small, ground-foraging sparrow nicknamed the "snowbird," common in winter across North America with regional color forms so different they were once classified as separate species.
Small olive-green songbirds of American forests known for persistent singing — especially the red-eyed vireo, which holds the record for most songs sung in a day at over 22,000 individual songs.
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