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20 something to eat with more or less regularity, he was far too energetic to let that be all, and taking as much interest in the object of the trip as I did myself, he really did as much collecting as I, and was of great assistance in preparing specimens. The following is a list of the birds observed:

1. Colymbus nigricollis californicus. Eared Grebe. Common at Grand Lake, May 10-12.

2. Hydrochelidon nigra surinamcrisis. Black Tern. Seen June 1, flying about over the meadows along Bear River, five miles above Steamboat Springs. A dozen or fifteen were seen.

3. Merganser americanus. American Merganser. A duck we supposed to be of this species was seen on Bear River, near Steamboat Springs, June 6 and 8.

4. Fulica americana. American Coot. One or two seen on Grand Lake, May 10.

5. Phalaropus lobatus. Northern Phalarope. June first I killed one on a little branch of Oak Creek, about 8 miles above Steamboat Springs. It seems rather a late date for the bird to be there as it does not breed in Colorado.

6. Ardea candidissima. Snowy Heron. One was seen on a bar in Grand River, near Kremmling, May 17.

7. Porzana carolina. Sora. One was caught in a trap set for muskrats, in a slough at Lay. At that date, June 17, it was no doubt breeding there.

8. Actitis macularia. Spotted Sandpiper. Seen practically everywhere we went that there were any streams or water. A nest and eggs were found at Lily, Routt County, June 30.

9. Oxyechus vociferus. Killdeer. The first one was seen May 12, on Stillwater Creek, between Sulphur Springs and Grand Lake. After that seen pretty much everywhere we went.

10. Dendragapus obscurus. Dusky Grouse. Seen at Sulphur Springs, and near our camp at Sheephorn Pass, in Grand County.

11. Lagopus leucurus altipetens. Southern White-tailed Ptarmigan. Only one was seen during the trip, while we were at Boreas Pass; in fact this was the only time we were in a locality inhabited by them.

12. Centrocerus urophasianus. Sage Grouse. Seen in the vicinity of Sulphur Springs during my stay there. June 14 we saw a hen with three chicks about two weeks old, about 8 miles west of Craig. The next day, at Lay, we saw another hen and three young, the latter being much larger than those seen the previous day. July 5, I saw well grown young near Meeker. The bird is quite numerous in some localities.

13. Zenaidura carolinensis. Mourning Dove. First seen May 12, at Stillwater Creek, between Grand Lake and Sulphur Springs. After that seen everywhere. Nests and eggs found at Craig, June 12-13, and one nest and eggs near Douglas Spring, June 27.

14. Cathartes aura. Turkey Buzzard. Seen near Craig, at Sand Creek, and Snake River, Routt County; and near Meeker.

15. Circus hudsonius. Marsh Hawk. Not as many seen as one would expect, and these were mostly at various places in Routt County. The only other locality was Mud Springs, Garfield County, on the White River Plateau.

16. Buteo borealis calurus. Western Red-tailed Hawk. Seen at Sulphur Springs March 29. After that they were seen more or less frequently everywhere we went.

17. Aquila chrysaetos. Golden Eagle. Seen at Yampa, Oak Creek, below Steamboat Springs, and on Snake River, all in Routt County; and one at White