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Zoos hiding birds as avian flu spreads in North America

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Ringed Teal on a branch at the Philadelphia Zoo, Philadelphia, PA July 19, 2015. (Photo by Cory Clark/NurPhoto via Getty Images) PHILADELPHIA - Zoos across North America are moving their birds indoors and away from people and wildlife as they try to protect them from the highly contagious and potentially deadly avian influenza.Penguins may be the only birds visitors to many zoos can see right now, because they already are kept inside and usually protected behind glass in their exhibits, making it harder for the bird flu to reach them.Nearly 23 million chickens and turkeys have already been killed across the United States to limit the spread of the virus, and zoos are working hard to prevent any of their birds from meeting the same fate.

It would be especially upsetting for zoos to have to kill any of the endangered or threatened species in their care."It would be extremely devastating," said Maria Franke, who is the manager of welfare science at Toronto Zoo, which has less than two dozen Loggerhead Shrike songbirds that it's breeding with the hope of reintroducing them into the wild. "We take amazing care and the welfare and well being of our animals is the utmost importance.

There’s a lot of staff that has close connections with the animals that they care for here at the zoo."Toronto Zoo workers are adding roofs to some outdoor bird exhibits and double-checking the mesh surrounding enclosures to ensure it will keep wild birds out.Birds shed the virus through their droppings and nasal discharge.

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