White-crowned pigeon

Description

The white-crowned pigeon can measure 29–35 cm (11–14 in) in length,span 48–59 cm (19–23 in) across the wings,and weigh 150–301 g (5.3–10.6 oz).It is around the same size as the common rock pigeon,but weighs a bit less since it is generally less chunky and has a relatively longer tail.The adult is dark grey,with green and white bars on the nape,a brilliant white crown to the head,a white iris,and a pale-tipped red bill.Juveniles are a less dark shade of grey,lack the nape pattern and white iris,and show only a few pale feathers on the crown.The song is a series of mourning dove-like woo pop woooo calls;this species is a member of a diverse clade of Patagioenas which vary much in appearance,but are united by their triple coos (except in the scaled pigeon).