Birds falling from the sky: Avian cholera kills thousands of wild geese in Idaho

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Originally published on 17 March, 2015

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At least 2,000 migrating snow geese carcasses were found dead in Idaho, apparently from avian cholera, over the weekend, wildlife managers said Monday.

According to Idaho Department of Fish and Game spokesman Gregg Losinski, it’s unknown how the snow geese contracted the disease while migrating from the Southwest and Mexico to nesting grounds in Alaska. The carcasses were retrieved and incinerated in fear of other wildlife ingesting the bacteria.

Avian cholera is highly contagious and the bacteria can survive in wetlands for up to four months. Symptoms of avian cholera could include convulsions, erratic flying, swimming in circles, or blood-stained, fawn-colored or yellow droppings.

Death from the disease may be so rapid that birds literally fall out of the sky with no previous signs of the symptoms.

Although humans face little risk of contracting the disease, avian cholera is the most infectious disease affecting wild waterfowl in North America.

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