(Tanner, AL) — Wildlife officials are looking into another mass bird kill.
About 300 dead black birds litter the side of Interstate-65 in Tanner, Alabama.
Bill Gates with the Wheeler National Wildlife Refuge says several factors could be responsible.
Gates says feathers scattered across the road indicate something may have struck the birds.
"Typically large numbers of birds die from disease, from poisonings and from being hit by objects or flying into objects. Really you can't rule any of those out until the birds have been examined."
Lab tests to determine the cause of death could take a month or two.