1914 BIRDS OF ARIZONA 79 



351. Polioptila plumbea (Baird). 



Plumbeous GnatcatchEr. 



Synonyms — C'lilickora /^liiinh'^a : Polioptila inclaiiiira : Polioptila caerulea 

 var. plumbea. 



Status — Fairly cfimnioii resident of the l,o\ver Sonoran zone of southern, 

 western, and parts of northern Arizona. Found breeding in all the low valleys 

 south of the Moj^ollon Divide (Gila. Santa Cruz. San Pedro, etc.), north to 

 Fort Whipple ( Coues. 1866a, p. 66) and Fort Mohave. Also reported in sum- 

 mer from Keam Canon, in northwestern Arizona (Fisher, 1903, p. 36). As it 

 has been taken at some of the northernmost points of record in Arizona during 

 the winter months, it is probably a permanent resident wherever it is found in the 

 state. thouLrh possibly there are slio,ht local migrations. 



352. Myadestes townsendi ( Audubon ) . 



TowNSEND Solitaire. 



Synonym — Ptilogonys totvnscndii. 



Status— Breeds in the Boreal zone of the San Francisco Mountains ( Mer- 

 riam. 1890. p. loi ) : not known to do so elsewhere in Arizona, though it may 

 prove to be a summer visitant in some other of the higher ranges ( Mogollon 

 Mountains. White Mountains, etc.). .\ pair of birds seen in the Huachuca 

 Mountains during June, 1910, under circum.stances possibly indicative i^f their 

 breeding ( F. C. Willard. MS). A common migrant in the Upper Sonoran and 

 Transition zones, observed at variotis points in eastern Arizona. Seen in north- 

 ern Arizona in January and February ( Kennerly. 1859. ]). 25). Has occurred 

 through the winter in the Santa Catalina Mountains (Scott. 1888. ,). 167). and in 

 the Dragoon Mountains (Osgood, 1903, p. 151). 



:^-:^. Hylocichla fuscescens salicicola Ridgway. 



Wii.i.ow THRi;sri. 



S}'nonym — Turd us fuscescens saiicicolus. 



Status — The only positive record for Arizona is that of a specimen taken by 

 Merbert Brown at Tucson, in May. 1882 ( Scott, 1888, ]). 167). Brcninger ( 1901a. 

 ]). 46) reported one as seen on the I'ima Indian Reservation, south of Phoenix, 

 in September |u;oo?|. but the bird was not taken. 



:|c;4. Hylocichla ustulata ustulata (Nuttall). 



Russet- BACKED Thrush. 



Synonyms — Tardus ustulatus: Hylocichla ustulata sivaiiisoni. 



Status— Although there are singularly few records of the occurrence of this 

 si)ecies in .\rizona, it is nevertheless a common migrant in the southern and 

 western parts of the state. The published records are as follows: Santa Rita 

 Mountains. May 17. 1881. one specimen (Brewster, 1882, p. 68); Fort Lowell, 

 May 21, 1884, one specnnen ( Brewster. 1885a. p. 85) : Yuma. May. three speci- 

 mens (^Nlorcom. 1887. p. 57): Huachuca Mountains, common migrant in the 

 spring ( Swarth, i(p4b, p. 03). Re-examination of specimens recorded as H. u. 

 swainsoni (Swarth. 1. c. ) shows thcni all to be examples of H. u. ustulata. 



