The Moult of the North American Tetraonidæ (Quails, Partridges and Grouse)

Abstract

DwiGHT, Moult of %/a/7s and Grouse.\Yu them Arizona is but a bridge to reacli their breeding and winter grounds, hence they are met with here only as travelers to the north and south.Among the summer residents I cannot say there was any appreciable diminution, but it did noticeably change the nesting habits of several of the larger Thrashers.Heretofore they had chiefly made homes in the difi^erent forms of cacti, and when this was broken down and destroyed they occupied the next round on the vegetable ladder -mesquite and palo verde trees and bushes.