Sept., 1924 FALL MIGRATION NOTES PROM ARIZONA lt.9 



caniceps, shufeldti and others were abundant at the lower edge of the pines and in 

 the pmons and jumpers, but no specimen of dorsalis was found in any of these aggre- 

 gations. I found dorsalis at a higher altitude, in small flocks, and never accompanied 

 by any other species. 



On September 14, specimens were collected that were still in molt, some young 

 birds with remnants of the juvenal plumage. The species was still abundant at the 

 end of October, and is probably permanently resident. 



Amphispiza nevadensis nevadensis. Sage Sparrow. First seen at Deadman 

 Flat September 25. Ten days later a few more appeared and by October 17 they were 

 present in fair abundance. At the end of the month the Sage Sparrows had disap- 

 peared again, but it might be that they had merely been driven to lower levels toward 

 the Painted Desert by the storm that, during the last week in October, covered the 

 higher country with snow. 



Pipilo maculatus montanus. Mountain Towhee. Of rare occurrence. Three 

 specimens collected, on September 8, October 10 and October 13, respectively, and two 

 or three others seen at long intervals, were all that were noted. Those collected were 

 found in juniper woods, where they must be merely of transient occurrence. 



Oberholseria chlorura. Green-tailed Towhee. Fairly common throughout Sep- 

 tember. Last noted October 2, though probably present for another week at least. 



Piranga hepatica. Hepatic Tan'ager. Seen once, an adult male, September 14, 

 in the yellow pine belt, at about 7500 feet altitude. 



Petrochelidon lunifrons. Cliff Swallow. A few seen migrating overhead on Sep- 

 tember 12. 



Hirundo erythrogaster. Barn Swallow. Seen migrating during September. Last 

 noted September 30. 



Iridoprocne bicolor. Tree Swallow. A few seen migrating September 12. 



Tachycineta thalassina lepida. Northern Violet-green Swallow. Migrating in 

 fair abundance during September. Last seen September 28. 



Stelgidopteryx serripennis. Rough-winged Swallow. A few seen migrating Sep- 

 tember 9. 



Bombycilla cedrorum. Cedar Waxwing. Two seen October 16 feeding on juni- 

 per berries. 



Lanius ludovicianus excubitorides. White-rumped Shrike. Seen at intervals 

 during September and early in October, always in the piiion-juniper belt. Last noted 

 October 17. 



Dendroica aestiva, subsp.? Yellow Warbler. A few migrating Yellow Warblers 

 were seen near Flagstaff September 4 and 5. 



Dendroica auduboni auduboni. Audubon Warbler. Seen in small numbers early 

 In September. On September 23 the species was fairly abundant at the lower edge of 

 the yellow pine forest, and a little later many appeared in the pinon-juniper belt. Last 

 seen October 19. 



Dendroica nigrescens. Black-throated Gray Warbler. A rare migrant. Several 

 were seen on September 7, one on September 13, and one (the last noted) on Septem- 

 ber 22, all in the piiion-juniper belt. 



Wilsonia pusilla pileolata. Pileolated Warbler. One seen September 24. 



Anthus rubescens. Pipit. First seen October 17 and occasionally thereafter. 



Oreoscoptes montanus. Sage Thrasher. First seen September 11 ; a few days 

 later this became the most abundant bird species in the piiion-juniper belt. The Sage 

 Thrashers were obviously migrating, and some days all the birds seen would be rap- 

 idly moving southward, an advancing army really impressive in numbers. Scores 

 were in sight at once on the ground, running from bush to bush, others were taking 

 short flights through the trees, and still others were in scattered companies overhead, 

 almost like flocks of bluebirds in flight. The usual call-note is a harsh chuck, sug- 

 gestive of that of a blackbird, but some thrashers were heard giving fragments of 

 their striking song from perches in the junipers. 



By the middle of October the number of Sage Thrashers had markedly dimin- 

 ished. On the 20th none were seen, but on the 23rd two appeared, the last observed. 

 Salpinctes obsoletus obsoletus. Rock Wren. Very few seen. Usually on lava 

 flows. 



Catherpes mexicanus conspersus. Canon Wren. A few seen or heard on lava 

 and in rocky gulches on the lower slopes of San Francisco Mountain. 



