Denny’s, the popular American diner chain, has reportedly joined a growing number of restaurants responding to the nationwide egg shortage by adding a temporary surcharge to its egg-based meals at some locations.

Denny's is temporarily adding an egg surcharge at some of its restaurants because of the nationwide egg shortage and increased prices, the chain confirmed to Axios Monday. Why it matters: The bird flu has ravaged the nation's supply of eggs,

Food chain Denny’s became the latest restaurant to crack under the pressure of the egg shortage, announcing Monday some locations are adding a surcharge to some of its most popular dishes. The news comes as the country deals with rising egg prices thanks to the impact of pervasive and widespread H5N1 bird flu.

A health alert has been issued for pet owners, as veterinarians are seeing cases of bird flu among cats. Dogs can also contract H5N1, experts said.

Highly pathogenic avian influenza can be transmitted among farms by wind, according to a recent study that found air-intake systems spread H5N1 in the Czech Republic.

Eggs are being confiscated at the U.S. border with Mexico amid a bird flu outbreak that has depleted chicken populations.