First it was cowboy hats. Then it was sombreros. Now, Las Vegas pigeons are wearing MAGA hats and animal advocates are left wondering when all this is going to end.

An anonymous group calling itself “P.U.T.I.N.” – which stands for Pigeons United to Interfere Now – said they released birds with MAGA hats into Las Vegas on the eve of the Democratic debate that was set for Wednesday and President Donald Trump's visit to the city.

A flock of pigeons wearing MAGA hats and one wearing a small hairpiece were released as part of an apparent "aerial protest," the group told the Las Vegas Review-Journal.

This isn’t the first time Las Vegas-area pigeons were seen with headwear. In December, the birds were spotted with tiny cowboy hats that were apparently glued to their heads. Not too long after, Reno City Manager Sabra Newby reported finding a pigeon in northeast Reno wearing a tiny sombrero.

The stint has led a local pigeon rescue group to launch an operation unlike any other. Mariah Hillman, co-founder of Lofty Hopes Pigeon Rescue, and her small crew began putting up traps to catch the pigeons and remove their hats.

They later told the Associated Press that one of the cowboy hat-wearing pigeons that gained popularity on social media had died. Employees say fumes from glue used to affix the hats could have poisoned the bird.

The rescue group said pigeons have fragile respiratory systems and a veterinarian had to trim feathers to then remove the hats.

“It’s a living being. Every living being has a right to his own life," Hillman told the Reno Gazette-Journal in December.

PETA Senior Director of Cruelty Casework Stephanie Bell said in a statement sent to USA TODAY that enough is enough.

"Stupid pranks like this one are serious business that can interfere with pigeons' ability to fly, see, and avoid predators, so it's no surprise that at least one pigeon used in a similar stunt has already died," she said.

PETA admits to being a part of provocative protests before in reference to their "climate change cow," who follows the Democratic candidates to primaries and debates posing for photo ops.

"But whatever your cause or political affiliation, pigeons should be left in peace," Bell concluded in her statement.

Contributing: Anjeanette Damon and Ed Komenda, Reno Gazette Journal. Follow Adrianna Rodriguez on Twitter: @AdriannaUSAT.