NORMAN, Oklahoma - There's a bit of a mystery in the Norman area. Birds were seen falling dead out of the sky.

One homeowner, near highway 9 and I 35, found more than a dozen dead in her yard. Becki Miller does not consider herself a bird watcher, but she's identified a potential problem with a flock of black birds.

"I heard this thump and I noticed a bird had just fallen out of the sky," she said.

In the last 24 hours, she's observed at least a dozen birds drop dead in her yard. Becki worries the flock was poisoned, or worse, could be carrying a disease. She called on the Oklahoma Department of Wildlife to investigate.

Micah Holmes with the Department of Wildlife explains the sudden deaths of the birds could also be attributed to weather patterns or environmental stressors.

"When we see a dozen birds we may think it is a lot but keep in mind this may come from a flock of 10,000 or 20,000 birds," said Holmes.

Either way, Becky will be on the lookout.

"Usually people worry about bird droppings right, but they don't worry about dropping birds," she said.

Another 20 black birds were found Thursday afternoon within a square mile of Miller's home. Now, typically these birds are protected from any type of extermination, but we found there's currently an order allowing for these birds to be killed if they cause damage.

We checked with the Department of Agriculture and currently there are no permits on file to kill off any black birds.