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The Mountain West News Bureau is a collaboration between Wyoming Public Media, Boise State Public Radio in Idaho, KUNR in Nevada, the O'Connor Center for the Rocky Mountain West in Montana, KUNC in Colorado, KUNM in New Mexico, with support from affiliate stations across the region. Funding for the Mountain West News Bureau is provided in part by the Corporation for Public Broadcasting.

"New Duck Disease" Afflicting Birds In Colorado

Canada Geese
Canada Geese

A bacterial infection that infects Canada geese called "" has turned up in the Mountain West.

The disease—contrary to its name—is actually not new, according to Jason Clay with Colorado Parks and Wildlife. He said it comes around in cycles every few years and mainly affects water birds, but can spread to poultry and other types of birds too.  

Canada geese are primarily a migratory species that pass through our region in the winter in large numbers.

"So when these large congregated flocks come together,” said Clay, “they create ideal conditions for various illnesses to travel amongst their populations.”

Clay said about 50 ducks and geese have been reported dead so far in the Denver metro area. But since Canada geese do migrate, the agency is keeping a close watch for potential spread of infection. 

And, Clay warned the public. “Don’t try to discard any carcasses yourselves or make contact with them and keep your pets away,” he said.

Clay said tests on the dead birds have been negative so far for viruses that can be transmitted to humans.

Wyoming Game and Fish Department said the agency has seen no cases yet this year. Utah Division of Wildlife Resources and Idaho Department of Agriculture said they are also not aware of any cases in their states yet this year.

This story was produced by the Mountain West News Bureau, a collaboration between Wyoming Public Media, Boise State Public Radio in Idaho, KUER in Salt Lake City and KRCC and KUNC in Colorado.

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