For a radio tower and surrounding buildings operated by US Customs and Border Protection (CBP) near the Texas-Mexico border, vultures are no joke. Around 300 of the carnivorous birds have roosted in its radio tower, and are creating communications issues thanks to their corrosive vomit and feces.
Quartz reports that CBP filed a request for information that includes details about the problems the vultures have created at the radio tower, which is now entirely coated in “droppings mixed with urine” that have also fallen on the ground and surrounding buildings below, where people work and equipment is kept.
Furthermore, a CBP spokesperson told Quartz that workers have anecdotes of the vultures dropping prey from as high as 300 feet above, creating a “terrifying and dangerous” work environment for the past six years.
Vultures regurgitate a corrosive vomit as a defense mechanism that can kill bacteria on their legs but also eat away at the metal radio tower, making it unsafe for maintenance workers to climb it and reducing the tower’s lifespan.
An adult Turkey Vulture at Santa Teresa County Park, San Jose, California, USA.
(Photo by Don DeBold)
Large groups of vultures also smell like corpses – the species is known, of course, for feeding on dead flesh, or carrion. Undigested bones and fur can be found at the base of where vultures roost.
But CBP can’t kill the vultures, as the Migratory Bird Treaty Act made that illegal in 1918. Instead, the agency is searching for a “viable netting deterrent” to stop the vultures from roosting on the radio tower. CBP told Quartz that it’s working with the Fish and Wildlife Agency, the USDA, environmental experts, and the Texas State Historical Preservation Officer to find a solution that doesn’t harm any of the vultures.
The agency also says there are no nests or baby birds in the tower. There are plans to clean and repair the radio tower before installing nets by August, before the natural heavy roosting cycle begins in the fall.
This article originally appeared on Insider. Follow @thisisinsider on Twitter.
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