1875.] 343 [Nelson. 



41. Tringoides macularius Gray. Spotted Sandpiper. 

 Abundant. The young began to appear the last of June. One of 

 these birds which I wounded slightly fell in the creek, and when I 

 went to take it out it dove and, using its wings and feet, swam under 

 water to the other side, a distance of about ten feet. 



AKDEIDiE. 



42. Nyctiardea grisea var. nssvia All. A pair were seen 

 several times on a sand bar in the creek. 



ANATIDJE. 



43. Anas boschas Linn. Mallard. A few specimens seen in 

 the creek. 



B. Mountains, thirty miles south of Fort Bridger. 



saxicolim:. 



1. Sialia arctica Sw. A pair were nesting in an old wood- 

 pecker's hole near the camp. * 



CERTHIID^. 



2. Certhia familiaris Linn. Creeper. Abundant. The 

 young, although full-grown, were still fed by the parents. 



TROGLODYTIDtE. 



A species of Wren was frequently seen in some dense bushes along 

 a stream, but could not be procured. 



stlvicolim:. 



3. Dendroeca Audubonii Baird. Audubon's Warbler. Com- 

 mon. Frequented the tops of the pines. 



4. Myiodioctes pusillus Bonap. Green Black-capped Fly- 

 catcher. Abundant. Found with the preceding. Their habits are 

 so similar that it was hard to distinguish them in the tops of the 

 pines. 



HIRUNDINID^. 



5. Tachycineta thalassina Cab. I found a pair nesting in 

 a hole in a stub about fifteen feet from the ground, near the foot of 

 the mountains. 



