CHESTNUT-COLLARED LONGSPUR. 
538. Calcarius ornatus. 6% inches. 
Male in summer with a black breast and crown, and 
chestnut nape; female, and male in winter, much duller 
and with all bright markings covered with grayish. 
Unlike the preceding Longspurs, these are constant 
residents in the greater part of the Western Plains, in 
some localities being classed as one of the most abun- 
dant birds. They have a short, sweet song that, in 
springtime, is frequently given as the bird mounts into 
the air after the fashion of the Horned Larks. They 
commonly feed about ploughed fields, along the edges 
of which they build their nests. 
Song.—A short, sweet trill; alarm note a sharp chip, 
and call note a more musical chirp. 
Nest.—Of fine grasses, placed on the ground in open 
prairies or along the edges of cultivated fields, often 
being concealed beside a tussock; their four or five 
eges are clay color marked with reddish brown and 
lavender (.75 x .55). 
Range.—Breeds in the Great Plains from Kansas 
and Colorado north to Manitoba; winters south te 
Mexico. 
