The price of eggs at U.S. grocery stores has climbed to a record high, nearly doubling from a year ago, as outbreaks of bird flu have led to shortages by wiping out millions of hens.

The bird flu is making poultry and eggs far pricier for people here in the United States. The outbreak has wiped out millions of birds across the country, causing egg prices to soar and supermarkets to limit purchases.

As the cost of eggs in the U.S. surges, more people are attempting to bring eggs across the U.S.-Mexico border, authorities say. Amid a bird flu outbreak that has caused chicken populations to decline,