38 Brooks, Birds of the Chilliwack District, B. C. a 
found it breeding on the floor of the valley as well as in the mountains. 
Sometimes seen in midwinter. 
93. Accipiter cooperi. CoopreR’s Hawxk.— Common and probably 
breeds. 
94. Astur atricapillus atricapillus. GosHawKx.—I find it very 
hard to distinguish adults of the two subspecies of Goshawk, but extremes 
of the young are very different, and I have killed several juveniles that were 
typical of this form — one, an extremely light colored female, the lightest 
Goshawk I ever saw in juvenile plumage. 
95. Astur atricapillus striatulus. WersTeRN GosHAwk.— More 
common than the last, but I have never found Goshawks breeding in this 
district though they should do so. There was an invasion of Goshawks 
the winter of 1888-89, when they were very common — mostly adults. 
96. Buteo borealis calurus. WerstTeRN Rep-TaiLt.— Tolerably com- 
mon resident. 
97. *Buteo lineatus elegans. RrEp-BELLIED HawK.— I have only 
sight records for this species, two of these were at short range when the 
conspicuous markings of the under surface of the wings and tail were plainly 
seen and left no doubt in my mind as I am familiar with the eastern race. 
98. Buteo swainsoni. Swainson’s Hawk.—Seldom seen in the 
valley but a common breeder in the park like country below timber line 
in the Cascades. I once observed a remarkable migration of Swainson’s 
Hawk at Chilliwack in the spring of 1889. Hundreds of the birds were 
wheeling slowly about at various elevations and slowly drawing away to 
the northward. The flight lasted for about five hours. Nine-tenths of 
the birds were of the melanistic phase (as are all the breeding birds in the 
mountains). The hawks were accompanied by a few Herring Gulls in 
adult plumage. 
99. Archibuteo lagopus sancti-johannis. RouGH-LEGGED Hawk. 
— Irregular migrant, sometimes fairly common. A few usually remain 
all winter on Sumas Prairie. 
100. Aquila chrysaétos. GoLpEN EaGLEe.— Winter visitant to the 
valley, breeding in the high mountains only. 
101. Halizetus leucocephalus alascanus. NortTHEerN BALD EAGLE. 
— Tolerably common resident. 
102. Falco rusticolus rusticolus. Gray GyrraLcon.— One record 
only, an adult female shot by my father, February 14, 1890, on Sumas 
Prairie. This bird chased a Mallard that I had hit very hard. But be- 
fore the Falcon made its final stoop the Mallard fell dead. The Falcon 
settled on the turf beside it but would not carry off its prize, or even touch 
it, though I kept hidden about a hundred yards away, and it eventually 
flew off and fell to my father’s gun later in theday. This bird is now in the 
collection of Mr. William Brewster, who says of it ‘“ not quite typical (a 
trifle too dark), but much nearer to this form than to any other.” 
103. Falco rusticolus gyrfalco. Gyrratcon.—A regular winter 
visitant to Sumas prairie where I have taken several specimens. Two of 
