Table 1. Duck species sampled in 2005 and RRT-PCR results, Canada*.

Common name	Taxonomic name	No. sampled	No. M1-positive (%)	No. H5-positive (%)
Mallard†	Anas platyrhynchos	2,600	1148 (44)	187 (7)
American black duck†	A. rubripes	293	99 (34)	2 (1%)
American wigeon†	A. americana	101	33 (33)	0
Blue-winged teal†	A. discors	431	105 (24)	2
Cinnamon teal†	A. cyanoptera	4	1 (25)	0
Gadwall†	A. strepera	36	1 (3)	0
Green-winged teal†	A. crecca	224	52 (23)	5 (2)
Northern pintail†	A. acuta	131	26 (20)	4 (3)
Northern shoveler†	A. clypeata	4	0	0
Wood duck‡	Aix sponsa	104	71 (68)	2 (2)
Common goldeneye§	Bucephala clangula	18	2 (11)	0
Canvasback§	Aythya valisineria	19	0	0
Hooded merganser§	Lophodytes cucullatus	26	8 (31)	0
Lesser scaup§	Aythya affinis	1	0	0
Redhead§	Aythya americana	223	18 (8)	6 (3)
Ring-necked duck§	Aythya collaris	51	8 (16)	0
Ruddy duck¶	Oxyura jamaicensis	2	0	0

*RRT-PCR, real-time reverse transcriptase–PCR.
†Dabbling duck (Tribe Anatini).
‡Perching duck (Tribe Cairinini).
§Diving duck (Tribe Aythini and Tribe Mergini).
¶Ruddy duck (Tribe Oxyurini).