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Ashy wood pigeon 
(Columba pulchricollis) 
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The ashy wood pigeon (Columba pulchricollis) is a member of the bird family Columbidae, found in temperate forests of southeastern Asia.

Columba: Latin columba (“dove, pigeon”). Ancient Greek κόλυμβος (kólumbos, “a diver”), from κολυμβάω (kolumbáō, “dive, plunge headlong, swim”).
pulchricollis: Latin pulcher beautiful; Latin -collis -necked ( Latin collum neck).

The bird genus Columba comprises a group of medium to large pigeons. 

Columba: Latin columba (“dove, pigeon”). Ancient Greek κόλυμβος (kólumbos, “a diver”), from κολυμβάω (kolumbáō, “dive, plunge headlong, swim”).

1/ Pale-capped pigeon (Bồ câu nâu, Columba punicea), also known as the purple wood pigeon

2/ Rock dove, rock pigeon, or common pigeon (Gầm ghì đá, Columba livia)

3/ Ashy wood pigeon (Columba pulchricollis) 
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Rock dove, rock pigeon, or common pigeon 
(Gầm ghì đá, Columba livia)

The rock dove (Columba livia), also known as the rock pigeon or common pigeon, is a member of the bird family Columbidae (doves and pigeons).

Columba: Latin columba (“dove, pigeon”). Ancient Greek κόλυμβος (kólumbos, “a diver”), from κολυμβάω (kolumbáō, “dive, plunge headlong, swim”).
The specific epithet livia is a Medieval Latin variant of livida, "livid, bluish-grey".