This is a true story about pigeons wearing cowboy hats. It happened in Vegas.

The day started out typically, according to Bobby Lee, our story’s main witness. On the afternoon of Dec. 5, he was on his way to the grocery store when he noticed something red outside his car window.

Pigeons were milling around a parking lot near a dumpster, pecking the ground. Ordinary behavior for the birds, but for one detail: Two of them were wearing miniature cowboy hats, one red and one gray.

Baffled, he grabbed his phone. The “birds have hats on, bro!” Mr. Lee exclaimed in a 12-second video that he later posted on Facebook.

Mr. Lee, 26, said he threw some Doritos out the window for the birds, but it scared them off. They didn’t go far; one settled on a ledge. On the internet, however, the cowboy-hat-wearing pigeons (watch out, pun incoming) took wing.