386 KANSAS UNIVERSITY SCIENCE BULLETIN. 



males, March 21 ; three March 29. First seen March 21 and 

 afterward common. In June I found a nest containing four 

 young, built underneath a stone in the canyon south of town. 

 This species was found on rough, rocky ground, usually on the 

 side of some knoll. They sang a great deal, and the song 

 resembled that of a thrasher more than that of a wren. It 

 consisted of separate notes, each one repeated three or four 

 times, and then, after a pause, a repetition of a different one. 

 The birds were rather hard to follow, though they kept bob- 

 bing up ahead of me everywhere. They were very nervous, 

 and when sitting on a rock watching me kept jerking the body 

 up and down. 



30. Catherpes mexicanus polioptilus Oberholser. — Inter- 

 mediate Canyon Wren. One male adult, March 21; one fe- 

 male adult, March 4. Catherpes mexicanus polioptilus from 

 Arizona is, according to Ridgway, intermediate between C. 

 mexicanus conspersus and C. mexicanus mexicanus. The two 

 taken are almost identical in coloration with a specimen of C. 

 mexicanus punctulatus from Summit, Cal., though the female 

 is a trifle paler, and because of this I have referred them to 

 this variety, though C. mexicanus conspersus should also occur 

 here. These birds were seen in the canyon south of ^own, and 

 were fairly common, but from their habits hard to find. They 

 frequented broken rock and brush-piles, and would bob out for 

 an instant to scold and then disappear. It was impossible to 

 follow them, as I could never tell where they were coming up. 

 They were usually found in pairs. Their song was a clear 

 whistling note, repeated in a falling scale, and is one of the 

 best that I know. It had great carrying power, and I fre- 

 quently heard them singing in the morning on the mountain 

 above town, a distance of a quarter of a mile or more. Some- 

 times the birds would mount into the top of a pine tree and 

 sing for half an hour, but usually they chose some sheer rock- 

 face in the canyon. 



31. Certhia familiaris montana Ridgw. — RocKY Mountain 

 Creeper. One adult male, March 8. This one bird, taken 

 early one morning on Crater Mountain, was the only one seen. 

 It came working rather rapidly down the side hill while I was 

 watching a pair of gray titmice. 



32. Sitta carolinensis nelsoni Mearns. — RocKY Mountain 

 Nuthatch. Five adult males, February 26, March 2, 4. 11, 



