The Harlequin Duck is rare and has been observed in the Gros Ventre drainage and on Fremont Lake. The Common Loon, also rare, is sometimes seen on the large lakes during migrations. From the special management species, it is apparent in the Forest is a raptor haven. In addition to the 5 raptors listed, another 25 can be seen, including Osprey, Golden Eagle, Gyrfalcon, Great Horned owl, and Snowy owl. On a good fall day, it is not unusual to see over 50 perched Red-tailed hawks.
Waterfowl are plentiful as well.
Due to its rarity and magnificence, the species generating the most interest is the Trumpeter Swan, which can be viewed at several of the larger lakes without recreation development, such as Upper Slide Lake in the Gros Ventre drainage, Mosquito Lake on the Union Pass Road, Lily Lake on Forest road 024, and Enos Lakes in the Teton Wilderness. Other water fowl of note include the Tundra Swan, Snow Goose, Ross' Goose, Barrows Goldeneye, and Harlequin Duck. Sandhill Cranes, and Blue, Sage, and Ruffed Grouse, are common on the Forest. The best chance to see Sandhill Cranes are in the broad valleys by driving the Green River and Gros Ventre roads. Whooping Cranes have been observed along the Green River north of Dollar Lake and the Beaver Creak area west of Daniel.