Bird Species Plummeted After West Nile
Posted on May 17, 2007 Comments (0)
In Maryland, for example, 2005 chickadee populations were 68 percent lower than would have been expected had West Nile not arrived, and in Virginia chickadee populations were 50 percent below that prediction.
It shows that the post-1998 declines were greatest at times and places in which the virus was especially prevalent — as indicated by the number of human infections diagnosed. As expected, American crows were among the worst hit, suffering declines of as much as 45 percent in some regions and wipeouts of 100 percent in some smaller areas. Other species that suffered included the blue jay, the tufted titmouse, the American robin, the house wren, the chickadee and — unexpectedly — the American bluebird.