Table 1.

Sample sizes for species included in the analysis from the IRD and USDA datasets and raw positivity rates not accounting for seasonal or spatial biases in sampling effort addressed in the provided predictions.

Common name	Scientific name	IRD	USDA	Total	% Positive
Snow Goose	Anser caerulescens	1518	5963	7481	6.17
Ross's Goose	Anser rossii	138	869	1007	2.98
Greater White-fronted Goose	Anser albifrons	821	674	1495	3.99
Brant	Branta bernicla	25	1843	1868	1.94
Cackling Goose	Branta hutchinsii	144	1507	1651	6.89
Canada Goose	Branta canadensis	630	20,279	20,909	2.37
*Mute Swan	Cygnus buccinator	1	2046	2047	3.57
Tundra Swan	Cygnus columbianus	12	1045	1057	4.82
Wood Duck	Aix sponsa	2958	26,213	29,171	3.21
Blue-winged Teal	Spatula discors	20,957	20,475	41,432	12.31
Cinnamon Teal	Spatula cyanoptera	334	1692	2026	19.30
Northern Shoveler	Spatula clypeata	6121	13,770	19,891	13.19
Gadwall	Mareca strepera	4306	18,565	22,871	4.35
American Wigeon	Mareca americana	4354	13,086	17,440	6.24
Mallard	Anas platyrhynchos	38,215	86,676	124,891	19.12
American Black Duck	Anas rubripes	727	4979	5706	15.98
Mottled Duck	Anas fulvigula	442	1717	2159	5.42
Northern Pintail	Anas acuta	12,290	18,165	30,455	13.04
Green-winged Teal	Anas carolinensis	10,787	35,530	46,317	11.60
Canvasback	Aythya valisineria	750	882	1632	3.19
Redhead	Aythya americana	664	2625	3289	4.59
Ring-necked Duck	Aythya collaris	1330	4085	5415	4.62
Greater Scaup	Aythya marila	324	795	1119	6.21
Lesser Scaup	Aythya affinis	2506	2678	5184	3.62
Common Eider	Somateria mollissima	1249	616	1865	1.23
Long-tailed Duck	Clangula hyemalis	1039	274	1313	2.58
Bufflehead	Bucephala albeola	869	2840	3709	5.55
Common Goldeneye	Bucephala clangula	681	778	1459	7.53
Hooded Merganser	Lophodytes cucullatus	167	866	1033	2.13
Ruddy Duck	Oxyura jamaicensis	210	697	907	5.73

*Mute Swan is non-native and non-migratory.