490 Birds of Colorado 
Genus THRYOMANES. 
Bill slender and rather compressed ; tail very slightly exceeding 
the wing in length; outer and inner toe about equal; plumago plain 
brown, the tail chiefly dusky. 
Four species in North America, including Mexico. 
Baird’s Wren. Thryomanes bewicki bairdi. 
A.O.U. Checklist no 719b—Colorado Records—Beckham 85, p. 140; 
(T. b. leucogaster) ; Thorne 87, p. 265; Cooke 97, pp. 120, 169, 221; 
Gilman 07, p. 195; H. G. Smith 08, p. 190; Rockwell 08, p. 178; 
Warren 09, p. 17; Dille 09, p. 88; Cary 09, pp. 184, 311. 
Description.—Adult—Above plain brown with a greyish tinge, and 
a few concealed white spots on the rump ; middle tail-feathers dusky- 
grey, finely cross-barred with blackish ; lateral feathers dusky, with 
white on the outer edges and tips ; a conspicuous white superciliary 
streak ; below dirty white, the under tail-coverts narrowly barred with 
black ; iris brown, bill horny, paler on the lower mandible; legs horny- 
brown. Length 4-75; wing 2-10; tail 2-20; culmen -55; tarsus -65. 
The sexes are alike, and the young birds hardly differ from the adults. 
Distribution.—The drier parts of south-western United States from 
Colorado and Nevada south through Mexico to the State of Oaxaca, 
probably a resident throughout its range. 
Baird’s Wren is a rare bird in Colorado ; it has only been taken some 
half-dozen times, and must be regarded as a scarce resident. It has 
been most often met with in the southern half of the State, and was 
observed by Christie breeding near Rouse Junction, in Huerfano co., 
at the beginning of June (Cooke). Other records are: Colorado 
Springs, May, 1879 (Aiken coll.), Pueblo (Beckham), Fort Lyon, April 
27th (Thorne), Loveland (Cooke), Holly, Prowers co., May 22nd 
(H. G. Smith), Irwin’s Ranch, Las Animas co., April 26th (Warren), 
near Lily and Rangeley, September (Cary), Grand Junction, November 
2nd (Rockwell), and Fort Lewis, « few noticed (Gilman). 
Habits.—Baird’s Wren is most numerous in cedar 
and pifion country in cafions and dry aroyas. It has 
a melodious song, sweeter and perhaps more musical 
than that of the House-Wren. No one has described 
the breeding habits in Colorado, but Coues found a nest 
placed in the cavity of a rotten horizontal bough of a 
cedar, about eight feet from the ground; it was built 
up of small cedar twigs and finely frayed bark of the same 
