Status: Rare casual spring and fall migrant statewide.
Documentation: Specimen: UNSM ZM6834, 19 Sep 1919 Monroe Canyon, Sioux Co (Mickel and Dawson 1920).
Taxonomy: No subspecies are recognized (Pyle 1997).
Spring: There are only about 37 reports for spring; documented records among those are in May.
This species is recorded more often in fall than spring; about 55% of the reports are in fall, but even then it is less-than-annual in occurrence. Of 40 banded in Iowa, all were banded in fall but one (Dinsmore et al 1984), and Kansas data are similar (Thompson et al 2011).
The only reports from the Panhandle are 7-9 May 1981 Sioux Co (Rosche 1982), 15 May 1998 Crescent Lake NWR, Garden Co (Brogie 1999), 15 May 2011 Sioux Co, and 27 May 2004 Gering Cemetery, Scotts Bluff Co.
Fall: Documented records are 1 Sep-2 Oct, with earlier dates 1 Sep 1973 Sarpy Co and 1-10 Sep 2021 Towl Park, Douglas Co, and later dates 28 Sep 2015 Cass Co, 2 Oct 2021 Sarpy Co, 8 Oct 1983 Hoskins Park, Wayne Co, and 8 Oct 1983 Erickson Farm, Wayne Co.
There are about 44 reports in all, distributed statewide, about half from the Panhandle, including the specimen cited above, and another specimen 8 Oct 1920 Sioux Co (UNSM ZM6833). This species has occurred in nine of the past 14 years (2008-2021), with three reported in 2009 and 2010 and five in 2021.
NWR: National Wildlife Refuge
UNSM: University of Nebraska State Museum
Brogie, M.A. 1999. 1998 (Tenth) Report of the NOU Records Committee. NBR 67: 141-152.
Dinsmore, J.J., T.H. Kent, D. Koenig, P.C. Petersen, and D.M. Roosa. 1984. Iowa birds. Iowa State University, Ames, Iowa, USA.
Mickel, C.E., and R.W. Dawson. 1920. Some interesting records of Nebraska birds for the year 1919. Wilson Bulletin 32: 73-79.
Pyle, P. 1997. Identification Guide to North American Birds. Part I, Columbidae to Ploceidae. Slate Creek Press, Bolinas, California, USA.
Rosche, R.C. 1982. Birds of northwestern Nebraska and southwestern South Dakota, an annotated checklist. Cottonwood Press, Crawford, Nebraska, USA.
Thompson, M.C., C.A. Ely, B. Gress, C. Otte, S.T. Patti, D. Seibel, and E.A. Young. 2011. Birds of Kansas. University Press of Kansas, Lawrence, Kansas, USA.
Silcock, W.R., and J.G. Jorgensen. 2021. Black-throated Blue Warbler (Setophaga caerulescens). In Birds of Nebraska — Online. www.BirdsofNebraska.org
Birds of Nebraska – Online
Updated 27 Dec 2021