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Mallard duck being held by scientists with gloved hands while another scientist swabs duck's cloacal.
USGS biologists swab a hen mallard duck for avian influenza
USGS biologists swab a hen mallard duck for avian influenza
USGS biologists swab a hen mallard duck for avian influenza

USGS biologists swab a hen mallard duck for avian influenza in Rio Grande County, Colorado.

Image: Costa's Hummingbird (Calypte costae)
Costa's Hummingbird (Calypte costae)
Costa's Hummingbird (Calypte costae)
Costa's Hummingbird (Calypte costae)

Close up of a Costa's hummingbird perched on twig.

A USFWS Biologist holds a set of bird bands and pliers and, finishes banding a Black-footed Albatross while another man crouches to release the bird.
Black-footed Albatross Banding
Black-footed Albatross Banding
Black-footed Albatross Banding

Jon Plissner (USFWS Biologist) bands a Black-footed Albatross on Midway Atoll, Northwest Hawaiian Islands.

Jon Plissner (USFWS Biologist) bands a Black-footed Albatross on Midway Atoll, Northwest Hawaiian Islands.