"Things You Wouldn't Know If We Didn't Blog Intermittently."
20 October 2009
I've seen flocks like this in Kentucky and Indiana. In the U.S. the roost locations for these immense gatherings often become contaminated with a fungus called Histoplasma capsulatum, which can cause human disease. Whether this is true in the U.K. or not, I don't know, because it also depends on characteristics of the underlying soil.