The Birds of Wyoming. 153 



found this a common species. Data too voluminous to pub- 

 lish. 



717 a. Catherpes mexicanus conspersus Ridgw. 

 Canon Wren. 



The only authentic record of this bird being found in 

 Wyoming is that of Aiken (Bull. M. C. Z., 1872, p. 196), in 

 which he states : "Quite a rare resident in winter. Found 

 only in the mountains among large masses of rock on the 

 faces of cliffs. Has a peculiar note, which one might easily 

 mistake for a chirping cricket." The A. O. U. Check List in- 

 cludes it as a Wyoming bird, but probably from the above 

 data. 



721 b. Troglodytes aedon aztecus Baird. 



Western House Wren. 



Summer resident ; common. It is very probable that 

 the references to Parkman's Wren, relating to Wyoming, 

 should be included under this variety. The following collect- 

 ors have taken this bird in Wyoming: Jesurun, Douglas; 

 Cary, common breeder, Newcastle; Aiken. Sherman. I have 

 observed this species at Sundance, Chugwater, Bonanza and 

 Buffalo. There are three specimens in the University collec- 

 tion that were taken in Albany and Carbon counties. 



722 a. Olbiorchilus hiemalis pacificus (Baird.). 



Western Winter Wren. 

 Probably a rare summer resident. Mr. Gilmore during 

 the summer of 1897 found, in the Freezeout hills, a nest con- 

 taining two young just ready to fly. He noted that the nest 

 was in a hole in a dead tree and was composed of small twigs. 

 The specimen taken from this nest was identified by Mr. Ridg- 

 way. This extends the range of the species eastward for a 

 considerable distance, for prior to this time its eastern limit 

 was placed in the mountains of Idaho. 



