In late December, reports from the southern tip of Texas began circulating among wildlife observers, hikers, and local residents. The region near the Rio Grande River, close to the city of Brownsville, is well known for its rich biodiversity. Birdwatchers from across the country travel there to catch glimpses of rare species, migratory birds, and unique ecosystems that thrive in the borderland environment. Yet even in a place famous for unusual wildlife encounters, the story that began to unfold surprised nearly everyone who heard it.
