Several major retailers are imposing restrictions to help ensure customers can still by eggs as the deadly bird flu runs rampant.

Some grocers are taking steps to stretch their existing egg supplies, the USDA found. It comes as the bird flu has caused egg prices to soar.

A deadly outbreak of avian flu has wiped out nearly half of the egg-laying hens in the U.S., leaving grocery store aisles empty, driving up prices and forcing retailers to limit purchases to curb hoarding.