210 UiiircrsH II of Ciilifonila I'liblical imia in ZooJofiy (Vol. 12 



both proiliictive forayint; grounds and safe retreats. It was rarely 

 tliat this wren was seen near the river, and then only as far as the 

 salt-husii belt. The range of the western house wren in the willow 

 assoeiation appeared to be not at all impinged upon by that of the 

 desert Bewick wren. This a^^ain sliows the IimmI dissociation of birds 

 of the same or nearly the same liabits. even in their winter habitats. 

 It is to be infeiTcd 11i,-it there arr inliiTciit pi-rrcreiices of tlu' two 

 species for cover of the two dilVercnt .sorts. 



The desert Bewick wren wils observed on the Califoniia side live 

 miles below Needles, opposite The Necilles. and in the lowei' ( 'lieme- 

 hui'vi.s X'allcy ; on (lie Al'i/ona side in the vicinit\' of ^lellen. at the 

 foot of The Needles, and above Kill Williams Kiver. At least on.' 

 specimen was secured at each of the alio\c points. The last for the 

 season were observed ilarch 21 at Kiverside Mountain. The series of 

 nine specimens (nos. 13827-13835) are uniform in their exhil)iti()n 

 of the characters assigned to this race by its original describer (Ober- 

 holser, 1898, p. -127). The great length of tail alone serves to dis- 

 tinguish Thrt/omanes bcivicki ( n inoiili ihis from any of the other seven 

 forms of brwicki occurring within the state of California idrinnell, 

 1910, p. 309). The Colorado Valley birds are with .i high degree 

 of probaltility visitants from a snnnnei' habitat lying on the higher 

 desert monnlains in the vii'inily of I'ealli X'alley. California and 

 Nevada, where this form has been rerorded as breeding (Olierholser. 

 1898, p. 429). 



There are in the ^lu.seum three skins (nos. 4280—4282) of this wren 

 taken by J. Ci. Cooper at Fort Mohave. January 1, March 6 and 21, 

 1861. 



Troglodsrtes aedon parkmani Audubon 

 Western House Wren 



Common as a winter visitant t.i the river bottom only, and even 

 here eontined almost exclusively to the willow association. Not one 

 individual was seen anywhere on the desert jiroper. The species was 

 noted in the willow thickets near Needles. February 15, and thence- 

 forth at all stations, on both sides of the river, until the last of IMareh. 

 At Ehrenberg but one was noted (and obtained) IMareh 29. The last 

 for the season was seen Ajiril 9. a single individual, in a jiile of drift 

 on the river bank on the Arizona side ten mile.s below Cibola. 



Five specimens preserved (nas 13836-13840). 



