Not known whether snow geese contracted the disease during migration
Humans face small risk of contracting avian cholera
Reuters in Salmon, Idaho
Tuesday 17 March 2015 14.34 GMTLast modified on Tuesday 17 March 201515.27 GMT
Avian cholera is suspected in the deaths of at least 2,000 snow geese that fell dead from the sky in Idaho while migrating to nesting grounds on the northern coast of Alaska, wildlife managers said on Monday.
Dozens of Idaho department of fish and game workers and volunteers at the weekend retrieved and incinerated carcasses of snow geese found near bodies of water and a wildlife management area in the eastern part of the state, said agency spokesman Gregg Losinski.
Avian cholera is believed to be the culprit in the deaths mostly because of the way the birds died, he said.
“Basically, they just fell out of the sky,” said Losinski.
He said biologists were awaiting results from a state wildlife lab to confirm the birds died of the highly contagious disease, which is caused by bacteria that can survive in soil and water for up to four months.
Humans face a small risk of contracting the disease, but the more immediate threat is to wildlife in the vicinity of contaminated carcasses, Losinski said.
About 20 bald eagles were seen near areas where snow geese carcasses littered the ground, but a lengthy incubation period makes it unclear if the eagles were infected and would carry the ailment elsewhere, said Losinski.