Endangered and Threatened Species

Rhynchophanes mccownii Status: Common regular spring and fall migrant west, rare casual elsewhere. Locally common regular breeder western Panhandle. State listed as Threatened. Documentation: UNSM ZM7565, 20 Jun 1901 Indian Creek, Sioux Co. Taxonomy: Chesser et al (2010) transferred this species from the genus Calcarius to monotypic Rhynchophanes. No subspecies are recognized (AviList 2025). Spring: […]

Troglodytes pacificus Status:  Rare casual fall visitor west. Taxonomy: Recent genetic studies (Drovetski et al 2004, Toews and Irwin 2008) have resulted in splitting of former holarctic Winter Wren T. troglodytes into three species, two of which breed in North America (Chesser et al 2010). The newly-elevated species are Pacific Wren T. pacificus, Winter Wren […]

Sternula antillarum athalassos Status: Fairly common regular spring and fall migrant central and east, rare west. Locally fairly common regular breeder east and central. State listed as Endangered. Documentation: Specimen: UNSM ZM6222, 4 Aug 1902 Badger, Holt Co. Taxonomy: Three subspecies are currently recognized (AviList 2025), although these are weakly differentiated (Pyle 2008) and synonymized […]

Calidris canutus RUFA Status: Rare casual spring and fall migrant statewide. State and federally listed as Threatened. Documentation: Photograph: 5 Sep 1986 Lake Babcock, Platte Co (Mollhoff 1987). Taxonomy: Six subspecies are currently recognized, three in Eurasia and three breeding in North America: roselaari in northwest Alaska, rufa in northern Canada, and islandica on islands […]

Charadrius melodus circumcinctus Status: Locally fairly common breeder central and east, rare casual west. Uncommon spring and fall migrant away from breeding sites. State and federally listed as Threatened. Documentation: Specimen: UNSM ZM6102, 17 Jun 1902 Keya Paha Co. Taxonomy: Two subspecies are recognized, melodus of the Atlantic Coast and circumcinctus of interior US, including […]

ANARHYNCHUS montanus Status: Fairly common regular breeder southwestern Panhandle. Fairly common regular spring and fall migrant southwestern Panhandle, rare casual elsewhere. State listed as Threatened. Documentation: Specimen: HMM 3053, 7 Apr 1917 Whitman, Grant Co. Taxonomy: Genetic studies resulted in a transfer of this species from genus Charadrius to genus Anarhynchus (Chesser et al 2024). […]