tail covert


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tail covert

n
(Zoology) any of the covert feathers of a bird covering the bases of the tail feathers
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tail′ cov`ert


n.
any of the feathers concealing the bases of a bird's tail feathers.
[1815–20]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Adult females are greyish-brown on the back, with scattered reddish feathers dispersed on the rump and upper tail coverts. immature males and females have similar plumage to adult females and there is no apparent plumage difference between adult and young females (Sick 1997).
The age of females that had not been banded as nestlings was estimated as follows: 1 yr old--back and most upper tail coverts brown, 2 yr old--tail coverts had a few brown and many grey feathers, and 2+ yr old--tail coverts were grey.