Walter Sentyrz's family has operated their neighborhood grocery store in Minneapolis for three generations. He says he’s barely able to keep eggs on his shelves as bird flu continues to ravage flocks across the country.

An ongoing bird flu epidemic has forced farmers to kill millions of egg-laying hens, leading to a serious shortage. The low supply of eggs means customers end up paying quite a bit more than usual at the supermarket. In some places, eggs now cost more than double what they did six months ago.