A chain of grocery stores in Texas is telling their customers they can only purchase a limited amount of eggs because of the bird flu impacting the nation’s egg supply.

H-E-B stores has posted signs saying that customers are limited to three cartons of eggs.  There is no limit on the size of the cartons, just the number of cartons.

The restriction is also in place at H-E-B’s affiliated Central Market stores.

“The avian flu this year has impacted a significant portion of the egg laying population in the United States (over 30 million birds),” company officials said in a statement. “This temporary constriction in the US market has caused an increase in price and shortage in availability of eggs.”

The announcement by H-E-B is on the heels of restaurant chain Whataburger announcing they were reducing their breakfast hours because of the number of egg based dishes on their menu.