Bald eagles in Utah dying from unknown illness

CREATED Dec. 26, 2013

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OGDEN, UT -- A mysterious illness is killing bald eagles in Utah.

Thirteen eagles have died since the start of December, and no one can figure out why. The eagles have been tested for several ailments, including lead poisoning from shotgun pellets that may have been inside their prey.

The tests came back negative.

Wildlife experts say they've never seen anything like this before.

"All the birds that have been brought in have varying degrees of paralysis.,” said Dalyn Erickson of the Wildlife Rehabilitation Center of Northern Utah.

“Weakness in the legs, weakness in the wings. And then very quickly move into having tremors, and then full blown seizures."

More tests are being conducted, and bird specialists hope to have some answers by next week.