Fig. 1.
Breeding Bird Survey (BBS) distribution of Cliff swallows in North America (Sauer et al. 2004). Inserted are the type localities of Ft. Morgan (FMV), Buggy Creek (BCRV), and Stone Lakes (STLV) viruses. (Online figure in color.)
Breeding Bird Survey (BBS) distribution of Cliff swallows in North America (Sauer et al. 2004). Inserted are the type localities of Ft. Morgan (FMV), Buggy Creek (BCRV), and Stone Lakes (STLV) viruses. (Online figure in color.)