Fort Union Trading Post National Historic Site Gray Catbird Black-and-White Warbler Montana Pronghorn Purple Sandpiper and Friend Purple Sandpiper Purple Sandpiper Red-tailed Hawk Common Goldeneye Chipmunk American Black Duck Apapane Hawaiian Goose Hawaiian Noddy Red-Masked Parakeets Ruddy Turnstone Common Myna Common Myna Mongoose Northern Cardinal Ruddy Turnstone Saffron Finch Immature Red-Necked Grebe Red-Necked Grebe Common Loon Red-eyed Vireo Cedar Waxwing Minnesota North Dakota Spotted Sandpiper Western Tanager Swainson's Hawk Eurasian Collared-Dove African Collared-Dove Upland Sandpiper Upland Sandpiper Immature Burrowing Owl Clark's Nutcracker Calliope Hummingbird House Wren Broad-Tailed Hummingbird Rufous Hummingbird Little Blue Heron Spotted Sandpiper