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BWTEBlue-Winged Teal (bird species Anas discors)
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Whole-genome sequencing and comparative genetic analyses of all available sequences of the North America wild bird H7N9 lineage suggest that the virus in the Wyoming blue-winged teal represents a precursor to the poultry viruses in the southeastern United States and that the mutation from an LPAI virus to an HPAI virus occurred in poultry.
Black-crowned night herons and blue-winged teal were the most common non-target species to climb onto float sets.
Transformed blue-winged teal data as auxiliary variable.
Clockwise from above: A migratory blue-winged teal (top) with two homegrown wood ducks; Travis Futch navigates Okeechobee marsh; wood duck dekes and dupes; Nick Linder recovers a hen woodie and thinks a little air conditioning sounds good right about now.
An American Blue-winged Teal was on the Border Pool at RSPB Burton Mere Wetlands, presumably having arrived in a previous autumn.
Other waterfowl regularly seen are mallards, black ducks, wood ducks, blue-winged teal and mergansers.
But a blue-winged teal has been drawing bird watchers to a Llanelli lake since taking up residence at Sandy Water Park in the town's Millennium Coastal Park.
As many as 13 million ducks and geese winter in the Gulf, with blue-winged teal being the first species to arrive, generally in late August and early September.
Migratory species that may be affected include the Lesser Scaup, Blue-winged Teal, Common Loon, American White Pelican, Northern Gannet, Peregrine Falcon, Northern Harrier, Piping Plover, Sanderling, and Red Knot.
Numbers of lapwings, redshanks, pochards, yellow wagtails and great crested grebe have all increased and rare birds such as a purple heron, citrine wagtail, blue-winged teal, and a pair of bitterns have all been spotted.
For example, only one of the 38 attacks of peregrine falcons in the low and variably turbid segment was on a blue-winged teal (Anal discars), generating a relative frequency of attack of 0.026; in contrast, six of the 95 attacks in the usually turbid segment were on blue-winged teal, a relative frequency of attack of 0.063.
Waterfowl are also featured including the American widgeon, black ducks, blue-winged teal, cinnamon teal, green-winged teal, gadwall, mallard, pintail, shoveler, wood duck, canvasback, greater scaup, lesser scaup, redhead, Canadian geese, and the snow goose.