| west nile virus antibodies in permanent resident and overwintering migrant birds in south-central kansas. | we conducted serological studies, using epitope-blocking elisas directed at west nile virus (wnv) and flavivirus antibodies, of wild birds in south-central kansas, the first for this state, in the winters of 2003-04 through 2005-06. overwintering migratory species (primarily the american tree sparrow and dark-eyed junco) consistently showed significantly lower seropositivity than permanent residents (primarily the northern cardinal). the cardinal showed annual variation in seropositivity between ... | 2008 | 18471059 |