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It is found among all pigeons and doves where it is referred to as pigeon milk. An analogue to crop milk is also secreted from the esophagus of flamingos and some penguins. [128] [129] [130] Crop milk bears little physical resemblance to mammalian milk, the former being a semi-solid substance somewhat like pale yellow cottage cheese.
Pigeon is a French word that derives from the Latin pīpiō, for a ' peeping ' chick, [6] while dove is an ultimately Germanic word, possibly referring to the bird's diving flight. [7] The English dialectal word culver appears to derive from Latin columba . [ 6 ]
The binomial name often reflects limited knowledge or hearsay about a species at the time it was named. For instance Pan troglodytes, the chimpanzee, and Troglodytes troglodytes, the wren, are not necessarily cave-dwellers. Sometimes a genus name or specific descriptor is simply the Latin or Greek name for the animal (e.g. Canis is Latin for ...
The rock dove, rock pigeon, or common pigeon (/ ˈ p ɪ dʒ. ə n / also / ˈ p ɪ dʒ. ɪ n /; Columba livia) is a member of the bird family Columbidae (doves and pigeons). [3]: 624 In common usage, it is often simply referred to as the "pigeon", although this is the wild form of the bird; the pigeons most familiar to people are the domesticated form of the wild rock dove.
Columba species are mostly termed "pigeons", and in many cases "wood pigeons", but some (including the type species of the genus), are termed "doves". The rock dove ( C. livia ) has given rise to the majority of domesticated pigeon breeds, such as the racing pigeon and the fantail pigeon , some of which have become feral.
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Genus †Microgoura (Choiseul crested pigeon, extinct early 20th century) Genus Otidiphaps (pheasant pigeon) Genus Goura (crowned pigeons, 4 species) Genus Didunculus (tooth-billed pigeon) Genus ?†Deliaphaps De Pietri, Scofield, Tennyson, Hand, & Worthy, 2017 (Zealandian dove, Miocene of New Zealand) Genus Caloenas (Nicobar pigeon)
The stock dove is common in ideal habitat, but never as abundant as the common wood pigeon, typically forming flocks of a few to a few tens, very rarely hundreds, and not the thousands often found with wood pigeons. In part of its European and western Asiatic range it is a migrant. There has been a sharp decline in France (−57% in 1976).