88 Drew on Birds of San yuan Count v. Colorado. 



12. Certhia familiaris. Linn. Brown Creeper. — An abundant resi- 

 dent; breeds. 



13. Telmatodytes palustris, Cab. Long-billed Marsh Wren. — 

 Rare; breeds?; found in September. 



14. Salpinctes obsoletus, Cab. Rock Wren. — Not rare; but no- 

 where common. A splendid songster. Breeds; ranges to timber-line, 

 and remains until October. 



15. Eremophila alpestris chrysolaema, Coues. Southwestern Lark. 

 — Not common. Breeds on the higher peaks. In October small flocks of 

 Larks descend into Baker's Park; a few remain all winter, but the most 

 go lower down. 



16. Anthus ludovicianus, Lickt. Brown Lark. — Common: nests 

 above timber-line, where in September both old and young may be found 

 busily gleaning their food on the shores of sub-arctic lakes. In October 

 they begin to descend and soon disappear. 



There is a great deal of variation in color in the Brown Lark. Some 

 birds have not the least trace of a spotting on the breast, while others ar.i 

 heavily spotted. Several nests, found at timber-line in July, were placed 

 under the shelter of projecting stones. They were empty at the time, the 

 young having just vacated them. 



17. Dendrceca auduboni. Bd. Arm box's Warbler. — Abundant; 

 breeds. A nest before me. taken June 26. is composed of soft, silky weed- 

 fibres, which, by their color, give a silvery-gray appearance to the nest. 

 Within it is well lined with feathers and cow-hairs, the latter predomina- 

 ting. The nest contained four eggs in which incubation had begun. 

 Color white, with a faint bluish tinge ; at the larger end. shell markings 

 of lilac, ami surface lines and blotches of rich brown and brownish black, 

 form a wreath. Average size : — .oiy X .013 mm. The nest was loosely 

 placed among the needles on a horizontal spruce bough, about three feet 

 from the ground. 



Their song is a pleasant little melody, in parts very similar to the song 

 of D. OBStiva. Remain from May until October. 

 The bird's tongue is finely cleft. 



18. Geothlypis macgillivrayi. Baird. MacGillivray's Warbler. 



Breeds. One specimen obtained, though I judge it is not uncommon: 



only shy. 



19. Myiodioctes pusillus. Bf>. Green Black-capped Flycatching 

 Warbler. — Of this little beauty I know nothing save that it nests here, 

 and becomes common in August and September. 



20. Pyranga ludoviciana. Bp. Louisiana Tanager. — I found two 

 which had wandered up into Baker"s Park, above the range of the pines. 



j 1. Iridoprocne bicolor. Coues. White-bellied Swallow. — Rare; 

 breeds: remains until September. 



22. Tachycineta thalassina. Cab. Violet-green Swallow. — Very 

 abundant; graceful on the wing, they cut but a sorry figure on the ground. 

 Nests both in hollow trees and among the cliffs. In a tree which con- 

 tained a small hollow with two openings, one six inches above and to oik- 



