passerine

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passerine

(păs′ə-rīn′)
adj.
Of or relating to birds of the order Passeriformes, which have feet specialized for grasping branches and similar structures, with the first toe facing backward. The order includes the songbirds and certain other groups, such as the flycatchers of the Americas.
n.
A bird of the order Passeriformes. Also called perching bird.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

passerine

any member of the avian order Passeriformes (singing or perching birds), which includes some half of the known species of birds.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005