48 Brooks, Birds of the Chilliwack District, B. C. = 
scending to the larger rivers in October when the Dog Salmon are running, 
their ova forming the main diet of the Dipper at that season and through 
the winter. 
234. Dumetella carolinensis. CatTsirp.— Scarce summer resident, 
probably about six pairs of birds breeding in the valley. 
235. Salpinctes obsoletus obsoletus. Rock Wrern.— One record. 
I looked for this wren regularly every summer in what I took to be suit- 
able localities in the mountains, and ultimately took one hopping about like 
& Sparrow on a gravel bar in ariver. This was late in November in very 
cold weather. I have never seen the species so late in its natural habitat 
east of the Cascades. 
236. Thryomanes bewicki calophonus. Sratrne Wren.— Com- 
mon resident. In the severe winter of 1908-09 when the thermometer 
dropped to thirteen below with a howling wind for a week, this hardy little 
wren seemed to suffer no inconvenience and while Purple Finches and 
Juncos were dying in numbers, it trilled its cheery song from any sheltered 
nook. It is never found east of the Cascades, and the “‘ Southern British 
Columbia” in the last A. O. U. Check-List should be corrected to south- 
western. 
237. Troglodytes aédon parkmani. WersterN Housz WrEN.— 
Common summer resident. 
238. Nannus hiemalis pacificus. WrsTmERN WINTER WREN.— Com- 
mon summer resident from the floor of the valley to the Hudsonian Zone. 
Common throughout the winter in the valley. 
239. Telmatodytes palustris paludicola. TuLs Wren.— Breeding 
in suitable localities and a few probably remain all winter. 
240. Certhia familiaris occidentalis. Ca.irorniA CREEPER.— 
Fairly common resident. 
241. *Sitta carolinensis aculeata. SLENDER-BILLED NUTHATCH.— 
I include this on the authority of Macoun’s Catalogue of Canadian birds. 
The record stands “‘ One specimen taken on Sumas Prairie, B. C., October 
10, 1894 (E. F. G. White).” Mr. White knows this bird well and the 
above constitutes the only record of the subspecies for Canada, as the form 
occurring east of the Cascades is now separated as nelsoni. It is quite 
likely the slender billed Nuthatch occasionally straggles over the border 
from northwestern Washington just as the Bush-Tit does. The nearest 
breeding record for this nuthatch is the neighborhood of Tacoma. 
242. Sitta canadensis. Rerp-BREASTED NuTHATCH.— Common resi- 
dent from the floor of the valley to the Hudsonian Zone. 
243. Penthestes atricapillus occidentalis. OrrGon CHICKADER.— 
Common resident. 
244. Penthestes rufescens rufescens. CHESTNUT-BACKED CHICK- 
ADEE.— Common resident. 
245. Psaltriparus minimus minimus. Busx-Tir.— Two taken 
from a large flock in the brush along the eastern edge of Sumas prairie, 
Nov. 25, 1899, and a pair observed breeding at the same place March 23 
