Black-bellied whistling ducks now breed in 90% of Texas counties; how the tropical species spread across the US |
Black-bellied whistling ducks, once largely confined to a few counties in South Texas, now breed in 90% of Texas counties as their range expands across the United States. Native to Mexico, Central America and South America, the tropical birds have spread along the Gulf Coast, up the Eastern Seaboard and across the Midwest. Researchers point…
