274 Birds of Colorado 
feet (Gale) ; Breckenridge, breeding at 9,700 feet (Carter); Green 
Mountain Falls, 7,700 feet, in El Paso co., and Beaver Creek, Fremont 
co. (Aiken); San Juan co., breeding up to 10,000 feet (Drew). 
It arrives late (May 24th in Fremont co., Aiken), and nests at the 
end of June or beginning of July, and returns south in September. 
Habits.—This Flycatcher generally affects narrow 
cafions, or shady glades near a mountain stream. It 
sometimes perches on dead tree-tops, whence it keeps 
watch for passing insects. It has a somewhat plaintive 
call of two low notes, and a clear, pleasing song as well. 
A nest found by A. W. Anthony on June 25th, 
in the San Juan co., was placed on a ledge of rock, about 
ten feet above the cart road ; it was a large ball of green 
moss, with a little cup in the centre lined with hair ; 
the eggs, generally three in number, are creamy-white, 
spotted and blotched with cinnamon, rufous and buffy- 
pink ; they measure about ‘66 x °52. Out of nine nests 
taken by Gale, three were from mine-shafts or tunnels. 
Traill’s Flycatcher. Hmpidonax trailli. 
A.O.U. Checklist no 466—Colorado Records—Aiken 72, p. 206 
(Z. pusillus) ; Henshaw 75, p. 356; Minot 80, p. 231; Drew 81, p. 140; 
85, p. 17; Morrison 88, p. 107; 89, p. 146; Bendire 92, p. 305; 
H. G. Smith 96, p. 76; Cooke 97, pp. 88, 209; Henderson 03, p. 235; 
09, p. 233; Warren 06, p. 21. 
Description.— Above dull olive-brown, slightly darker on the crown; 
wings and tail dark brown, the secondaries edged with whitish-olive 
and the middle- and greater-coverts broadly tipped with pale buffy, 
forming two conspicuous wing-bands ; below ashy-grey, white on the 
throat, duskier on the breast, becoming pale primrose on the flanks 
and abdomen ; tenth (outer) primary longer than the fifth; tail even. 
Iris brown, upper mandible blackish-brown, lower pale brownish- 
white, legs brownish-black. Length 5-20; wing 2-70; tail 2-40; 
culmen -50; tarsus -60. 
The sexes are alike, and the young birds hardly differ from the adults. 
Distribution.—Breeding in western North America from southern 
Alaska through Idaho to the Mississippi Valley and westwards; in 
winter, south over Mexico and Central America to Colombia. 
Trail’s Flycatcher is a common summer resident in Colorado from 
the plains to about 8,000 feet. It reaches El Paso co. about May 15th, 
