512 Birds of Colorado 
along the western mountains to northern California, Arizona and Ni 
Mexico; in winter south through the United States and Mexi 
to Guatemala. 
The Ruby-crowned Kinglet is a common bird throughout Colorac 
in the plains a migrant, in the mountains a summer resident. 
arrives from the south about the middle of April and passes on nor 
or up into the mountains before the middle of May, descends age 
in September, and leaves the State in October. Its breeding ran 
extends vertically from about 7,000 feet—Middle Park (Carter ap 
Cooke) to timber line. The following are breeding records: Buffe 
Peaks, Park co. (Batty), Twin Lakes, 9,200 feet (Scott), Boswe 
11,000 feet (E. Lewis apud Cooke), and Hancock, 11,000 feet (Ston 
all in Chaffee co.; Gold Hill and Ward in Boulder co. (Gale) ; near Fc 
Garland, 10,000 feet (Henshaw), San Juan co., 7,000 to 10,500 fe 
(Drew). During the spring migration its range extends out on t 
plains as far as Limon, in Lincoln co., where it has been taken, Ap 
30th and May 19th, by Aiken. 
Habits.—The Ruby-crowned is a very sociable bir 
especially in the fall, when it may generally be seen 
small parties with Bluebirds, Titmice and Warble: 
pursuing its way through the woods and very active 
engaged in securing small insects from the branch 
and trunks of trees, and also catching them occasional 
in flight. It has a very sweet and modulated son 
remarkably loud and strong for so small a bird. 
The first nest and eggs known were secured by Bat: 
in the Buffalo Peaks, in Park co., on June 2lst, 187 
This nest was in a spruce tree, about fifteen feet up, al 
contained five young and one egg. It has subsequent 
been taken by a good many other collectors, includu 
Gale, who found a number in the mountains abo 
Boulder. They were almost always placed in a spru 
tree, from eight to fifty feet above the ground, sometim 
almost pensile and woven to the smaller twigs, sometim 
simply saddled on a horizontal bough. The nest its 
is a large and loosely woven structure of fine moss, sc 
stringy fibres and spider web, lined with hair or feathe: 
