Vaux's Swift. Chaetura vauxi. A male (JSW no. 943) collected on 14 September 1969 was very fat, with a few pinfeathers, a large skull window (7 x 10 mm), and the testes 1/? X 2 mm. It was taken from a flock of seven Vaux's Swifts and is the first specimen from central Arizona (Phillips et al., loc. cit.:59). Mountain Chickadee. Parus gambeli. A female (JSW no. 974) collected 24 October 1970 is our only known specimen from the south-central Arizona lowlands. This individual with skull fully ossified, no fat, and ovaries 4 x 15 mm, was one of four seen that day. Rufous-backed Robin. Turdus rufopalliatus. Our specimen (JSW no. 927), collected on 30 November 1969, is an adult male, testes minute. It showed little fat and a few pinfeathers in the capital tract only. It was feeding alone on the grassy margin of a marsh even though there was a small flock of Robins (Turdus migratorius) in the area. This is approximately 175 mi. N of the specimen collected by Harrison (Auk 79:271, 1962). It is also apparently the second verifiable record for the United States, and the species, like the Groove-billed Ani, remains unrecorded in northern Sonora. Northern Water-thrush. Seiurus noveboracensis. A female? (JSW no. 969) taken on 30 August 1970 is the first collected from the lowlands of south-central Arizona since one taken at Phoenix by Breninger on 16 September 1897 (Phillips, pers. corr.). The specimen had heavy fat beneath the feather tracts, skull fully ossified, and no molt. American Redstart. Setophaga ruticilla. A young female (JSW no. 971) collected 30 August 1970 is the first record for central Arizona and one of few specimens for the state. The specimens showed skull windows, no molt, and moderate fat. Golden-crowned Sparrow. Zonotrichia atricapilla. A female (JSW no. 923) taken on 15 November 1969 is the first record from central Arizona (Phillips et al., loc. cit.:207) and one of the few specimens from the state. It had a few pinfeathers in the spinal tract, moderate fat, and ovary not enlarged (1% X 3 mm). Swamp Sparrow. Melospiza georgiana. A female (JSW no. 924), collected on 15 November 1969, was the first specimen from central Arizona, although there are others from the southern and western parts of the state (Phillips et al., loc. cit.:208-209). It had little fat, no molt, a large skull window (8 x 10 mm), and ovary not enlarged (2 X 3%/2 mm). Partial support for this study was provided by a Sigma Xi Grant-in-Aid of Research on the Ecology of the Salt River at the proposed Orme Dam site, Maricopa Co., Arizona.