Pigeon, (any) bird of the taxonomic family Columbidae
Pigeon, the common city pigeon (Columba livia) or Rock Pigeon,
Expressive works & their characters: Pigeon redirects here. ... Binomial name Columba livia Gmelin, 1789 The Rock Pigeon (Columba livia), is a member of the bird family Columbidae, doves and pigeons. ...
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Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere.
Unlike most other birds, (but see flamingo), the doves and pigeons produce "crop milk", which is secreted by a sloughing of fluid-filled cells from the lining of the crop.
A molecular phylogeny of the dove genera Streptopelia and Columba; Auk 118, 4 (2001): 874-887]