Wetland and riparian bird species represented by the migration concentration models, migration time periods for each species, and the numbers of observations used from existing occurrence datasets for model validation.

aThe wetland bird model represents a large number of species. To maintain consistent datasets among the groups for the validation, we only included in the validation species of conservation concern that also had available occurrence data. The additional species represented by the model are: American Bittern (Botaurus lentiginosus), Eared Grebe (Podiceps nigricollis), Pied-billed Grebe (Podilymbus podiceps), Western Grebe (Aechmophorus occidentalis), American White Pelican (Pelecanus erythrorhynchos), Canada Goose (Branta canadensis), Mallard (Anas platyrhynchos), Gadwall (Anas strepera), American Wigeon (Anas americana), Northern Shoveler (Anas clypeata), Blue-winged Teal (Anas discors), Cinnamon Teal (Anas cyanoptera), Green-winged Teal (Anas crecca), Ring-necked Duck (Aythya collaris), Bufflehead (Bucephala albeola), Common Merganser (Mergus merganser), Ruddy Duck (Oxyura jamaicensis), Sora (Porzana carolina), American Coot (Fulica americana), Black-necked Stilt (Himantopus mexicanus), Spotted Sandpiper (Actitis macularia), Wilson’s Phalarope (Phalaropus tricolor), Ring-billed Gull (Larus delawarensis), and California Gull (Larus californicus).