Movements and Migration

The Siberian Nuthatch appears to be largely resident throughout its range, though local movements among first-year birds were noted during July along the upper Anadyr River (18 Tomkovich, P. S. (2008). Birds of the upper Anadyr River (Chukotka Autonomous Area). Collection of Works of the Zoological Museum of Moscow State University, Number 49. Close ). Assertions that this species has wandered to northern Europe (e.g., 41 Harrap, S., J. del Hoyo, N. Collar, G. M. Kirwan, and D. A. Christie (2020). Eurasian Nuthatch (Sitta europaea), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. Close ) likely refer to the the Eurasian Nuthatch subspecies, Sitta europaea asiatica, which is known to irrupt rarely into northern Europe (42 Eriksson, K. (1970). The invasion of Sitta europaea asiatica Gould into Fennoscandia in the winters of 1962/63 and 1963/64. Annales Zoologici Fennici 7:121–140. Close ). That said, irruptive autumn movements of the Siberian Nuthatch have been noted as far west as the Yenisei Valley, circa 91–92^oE (40 Bershitskaya, T. V. (2002). Physical and geographical specifics of distribution and biology of the tits and nuthatches of Russia. In Study of Biodiversity on the Yenisei Ecological Transect, Animals (D. A. Shakhin, and E. V. Rogacheva, Editors), Moscow, Russia. pp. 308–325. Close ), and thousands were seen flying southward in August 1981 at Mirnoye, Krasnoyarsk Krai at the southwestern corner of this species' range, presumably due to a failure of the Siberian stone pine (Pinus sibirica) crop (7 Harrap, S., and D. Quinn (1996). Tits, Nuthatches & Treecreepers. Christopher Helm, London, UK. Close ). Such eruptions due to local food shortages are known to occur in other nuthatch species, including the Red-breasted Nuthatch (Sitta canadensis) and the Eurasian Nuthatch (43 Bock, C. E. and L. W. Lepthien. (1972). Winter eruptions of Red-breasted Nuthatches in North America 1950-1970. American Birds 26:558-561. Close , 7 Harrap, S., and D. Quinn (1996). Tits, Nuthatches & Treecreepers. Christopher Helm, London, UK. Close ).

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