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THE CONDOR Vol. IX 



and eggs fully 150 miles west of the Kansas line, unless purely accidental, would 

 seem to indicate the possibility of the birds occurring more or less commonly 

 thruout the eastern half of Colorado; a question which can only be definitely set- 

 tled by extensive and accurate observation. 



Denver, Coloi'ado. 



SOME BIRDS OF SOUTHWEST COIvORADO 



By M. FRENCH GIIvMAN 

 ( Concluded) 



Petrochelidon lunifrons. Cliff Swallow. Common, nesting under eaves of 

 buildings and on cliffs. Down the La Plata River near the New Mexico line I saw 

 several holes in a cliff, containing the swallows' nests. These nests would com- 

 pletely fill the shallow holes, six or eight nests being required to close the entrance 

 of some. 



Tachycineta thalassina lepida. Violet-green Swallow. Numerous, breeding 

 in holes in the pines. I saw several spirited fights between two birds that wanted 

 the same nesting site. I stood against the tree trunk and watched the birds "lock 

 horns" at the entrance of the hole and slowly flutter and fight, revolving the while 

 till they reached the ground. Several times I think I could have scooped them in 

 with a butterfly net. 



Lanius ludovicianus excubitorides. White-rumped Shrike. Several seen at 

 Fort L,ewis; common about Cortez. 



Vireo gilvus swainsoni. Western Warbling Vireo. Common. Nests fre- 

 quently seen in alders and cottonwoods near the river. 



Dendroica aestiva. Yellow Warbler. Common, nesting along the river bot- 

 toms. 



Dendroica auduboni. Audubon Warbler. Common, nesting from 7,500 feet 

 to about 11,000 feet. 



Geothlypis tolmiei. Tolmie Warbler. Common. Nesting in river bottom 

 and along irrigating ditches. 



Icteria virens longicauda. I^ong-tailed Chat. One seen near Durango. 



Wilsonia pusilla pileolata. Pileolated Warbler. Rather common. 



Anthus pensilvanicus. Pipit. Arrived April 30, soon leaving for higher alti- 

 tudes. July 22 I saw two pairs in a ten-acre patch of blue columbine {,AquiIegia 

 ccej'ulea) at an altitude of over 12,000 feet. From their actions I judged a nest 

 was near; but patient search failed to reveal it. 



Cinclus mexicanus. Water Ouzel. Seen by Mr. Peterson on the I^a Plata 

 River several miles below Fort I^ewis, and also on the Animas River near Durango. 



Oroscoptes montanus. Sage Thrasher. Found nesting from Cortez to Navajo 

 Springs, in May and June. 



Mimus polyglottos leucopterus. Western Mockingbird. Seen only in the 

 vicinity of Navajo Springs where one nest was found and five or six pairs of birds 

 seen. 



Galeoscoptes carolinensis. Catbird. One seen at Mancos, May 31. Two pairs 



