Status: Fairly common regular winter visitor statewide.
Documentation: Specimen: UNSM ZM6747, Mar 1900 Lancaster Co.
Taxonomy: Chesser et al (2017) recognized separate species in the Eastern and Western Hemispheres, L. excubitor Great Gray Shrike of Eurasia, and L. borealis Northern Shrike of North America. We follow this treatment here.
Pyle (1997), Gill and Donsker (2017) and Clements et al (2017) synonymize western invictus and eastern borealis; the latter authors basing their decision on Phillips (1986). Phillips (1986) stated “AOU’s recognition of L. e. “invictus“ … amusingly illustrates the disdain of zoo-politicians for mere facts”; Ridgway “long ago correctly synonymized invictus” [with borealis].
We follow Phillips (1986) but note here information regarding distribution in Nebraska of the former subspecies. According to AOU (1957), invictus, the western subspecies, wintered throughout Nebraska while borealis, the eastern subspecies, wintered westward to eastern Nebraska and Kansas. Two specimens from Hall Co were invictus, while one from Dakota Co was an intergrade (DuMont 1933). A specimen, UNSM ZM11413, collected in Logan Co 28 Feb 1937 was thought to be the westernmost record of borealis, although Swenk considered it an intergrade, albeit closer to borealis than invictus (Glandon and Glandon 1937).
Winter: Sep 29, 29, Oct 1 <<<>>> Apr 11, 13, 13 (north and west), Oct 17, 18, 20 <<<>>> Apr 3, 3, 4 (elsewhere)
Arrival is mainly in late Oct, but the early dates above indicate earlier arrival in the north and west. An earlier date away from the north and west is of one in Merrick Co 14 Oct 2012 Merrick Co.
Departure is generally complete by early Apr, although most depart by late Mar. There are later dates 14 Apr 2008 Buffalo Co, 1 May 2016 one well-described in Kimball Co, and a very late date 10 May 2005 at NNF Halsey; it was compared to a nearby Loggerhead Shrike.
Northern Shrikes are found statewide but are rare in the extreme southeast. The highest CBC single count total is 11, recorded five times. The highest overall CBC totals are 47 in 2013 and 35 in 1988-89, and lowest is one, in 1980-81. A total of 45 were counted in western Nebraska Dec-Mar 1999-2000 and 19 there 27-30 Dec 2007 (Stephen J. Dinsmore, personal communication).
- High counts: 15 near Scottsbluff, Scotts Bluff Co 2 Jan 1999, 12 on the Calamus-Loup CBC 27 Dec 1998, and 10 there 28 Dec 2010.
CBC: Christmas Bird Count
NNF: Nebraska National Forest
UNSM: University of Nebraska State Museum
Chesser, R.T., K.J. Burns, C. Cicero, J.L. Dunn, A.W. Kratter, I.J. Lovette, P.C. Rasmussen, J. V. Remsen, Jr., J.D. Rising, D.F. Stotz, and K. Winker. 2017. Fifty-eighth supplement to the American Ornithological Society’s Check-list of North American Birds. Auk 134: 751-773.
Clements, J.F., T.S. Schulenberg, M.J. Iliff, D. Roberson, T.A. Fredericks, B.L. Sullivan, and C.L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017. http://www.birds.cornell.edu/clementschecklist/download/
DuMont, P.A. 1933. Some Nebraska bird records in the Talbot Collection. NBR 1: 64.
Gill, F., and D. Donsker (Eds). 2017. IOC World Bird List (v 7.3), accessed 30 January 2018.
Glandon, E.W., and R. Glandon. 1937. More bird identifications for Logan County. NBR 5: 29-31.
Phillips, A.R. 1986. The known birds of North and Middle America. Part 1. Phillips, Denver, Colorado, USA.
Pyle, P. 1997. Identification Guide to North American Birds. Part I, Columbidae to Ploceidae. Slate Creek Press, Bolinas, California, USA.
Silcock, W.R., and J.G. Jorgensen. 2018. Northern Shrike (Lanius borealis), Version 1.0. In Birds of Nebraska — Online. www.BirdsofNebraska.org