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?[uly, 1917 WINTER MIGRATION OF 1916-17 IN THE NORTHWEST 127 The Horned Owl Invasion, as it might be called, extended at least as far south as Portland, Oregon, where pheasant farms in that vicinity have suf- fered severely from their depredations. The main line of flight seems to have been on the Pacific coast side of the Cascade Mountains, as on the east side re- ports do not indicate any very great increase over the usual numbers. Among the many interesting features of the migration of these owls is the fact that at least seventy-five percent of those taken have been females. This was in the vicinity of Tacoma, but it would be desirable to learn from other observers the main route taken by the males, if many of that sex joined in the general migra- tion. Another interesting point is that up to the time of this writing, March 1, none of the birds examined by me showed the least indications of breeding. To say the least this is unusual in Horned Owls at this season of the year. [Later,--The most recent horned owl examined was a female taken April 2, 1917, whioh showed not the least signs 9f breeding. This bird was examined by Mr. Edwards, who reported it to me, and mounted it. Upon comparison it shows a strong tendency towards algistus, although I should not consider it by any means typical, and is undoubtedly one of the horde that has swept down from the far north.] Another interesting visiting species, that commenced arriving at about the same time as the above mentioned birds, is the Snowy Owl (Nyctea nyctea). The first individual recorded in the vicinity was brought in to Mr. Fred Ed- wards, the Tacoma furrier and taxidermist, on November 10, 1916. They be- came very abundant after that date, Mr. Edwards having about thirty of them brought in for m'ounting. The last record was taken January 25(1917. Their food supply ?vas about evenly divided between ducks and mammals, the latter represented by mice and rats. I doubt very much if any of the ducks eaten were brought down by the owls, all evidence seeming to show that wounded birds only were taken. In at least one instance an owl seized a duck as it reached the ground after being shot, facing the hunter with great courage as he came to secure his game. It seems probable that this migration started from farther towards the interior than that of the Horned Owls; for Mr. Bur- ton, in Victoria, reports Snowy Owls as present, but not in great numbers. In Washington they were very abundant at Bellingham in the northwestern part of the state, as reported by Mr. J. M. Edson, of that city. At Kiona, on the east side of the Cascade Mountains, Mr. F. R. Decker reports them as common. In a recent letter from Mr. Geo. G. Cantwell, of Puyallup, Washington, dated March 31, 1917, he writes that he has just returned from Dungenes, Washington, where three Snowy Owls were still lingering in the vicinity. Such a late date is unprecedented for these owls in Washington, in my experience, and it will be most interesting if further data on the subject can be obtained. Another handsome migrant, which came in numbers for the first time in my experience, was the Goshawk. Although I have had none of the birds iden- tified, such a very wide variation is to be found in both adult and immature specimens that there is hardly room for doubt that both Astur atricapillus alricapillus and A. a. striatulus are represented. Goshawks seemed about equal- ]y numerous on both sides of the Cascades. Barnyard fowls seem to have made up their main food supply, the game farm of Dr. Shaver having contributed its share as usual. He killed one by poisoning a duck, and shot another while it was eating one of his hens. Mr. Edwards reports finding the remains of arab-