Over 200 birds are suspected to have died from the avian flu at a Chicago-area forest preserve – CNN

The deaths occurred at the Baker’s Lake forest preserve, the Forest Preserves of Cook County said in a statement on Thursday.

The federal government, which provides the only declaration of incidences of avian influenza, is conducting further tests to determine the cause of death.

Zoos across the country have been moving their birds indoors over the past couple of months to protect them from the spread of the potentially deadly strain.
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The Baker’s Lake preserve is home to one of the most significant heron rookeries in the Midwest, according to the Forest Preserves organization.

In addition, many other native and migratory birds nest and feed there. “Because of the nature of the local bird population, the avian influenza impact to date has only been observed among waterfowl and water birds,” the organization added.

Biologists presented “seven cormorants for necropsy and testing to state pathologists” on April 7 after finding numerous dead birds a day earlier, the organization said.

Lab results showed the birds were suffering from a presumed outbreak of H5 avian influenza, it said.

Cases of avian flu have been rising in backyard flocks and wild birds across dozens of states in recent months.

The flu was first detected in February in a commercial turkey flock in Dubois County, Indiana, according to the US Department of Agriculture. This was the first case of infection in the US since 2020.

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