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Paratype: ZMA 42762, adult male, Pokhodsk, "at 69°04' N on the Kolyma" (Kolyma Delta, N Yakutia, Russian Federation), collected "23 May" [= 5 Jun] 1905 by S.A. Buturlin; wing 76.5, tail 50, bill to skull 17.3, tarsus 27.1.
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Paratype: ZMA 42763, adult male, Pokhodsk (Kolyma Delta), collected "25 May" [= 7 Jun] 1905 by Buturlin; wing 76.5, tail 51.5, bill to skull 16.3, tarsus 26.8.
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Additional information
Buturlin published his new taxon in two journals, both published 1907: Psovaya i Ruzheinaya Okhota 13 (6), and Ornith. Monatsberichte 15 (5). Having no access to the first-mentioned obscure Russian hunting journal, it it difficult to find out which of the two is the earlier publication. The issue of the last-mentioned journal is from May 1907. In here, Buturlin states: "27 full-grown males [of this new form] were examined from the Lower [Nizhnyaya] Tunguska and Monjero [Moyero] rivers east to Anadyr; the types are from the Kolyma Delta" (Buturlin 1907b). Obviously, all birds from the Kolyma Delta can be considered as syntypes, including the ZMA birds, while his other birds are paratypes. However, Sudilovskaya (1959) mentions a [lecto] 'type' from Pokhodsk (ZMM coll. nr. R-52480, male, 28 May 1905) and a 'cotype' (ZMM coll. nr. R-12744, male, 31 May 1905), also from Pokhodsk, making our birds paratypes.
Measurements
As far as types in the ZMA are concerned, all measurements were taken by C.S. Roselaar, unless otherwise noted, using the methods as described in Svensson (1992) and comparable with the data published in the Handbook of Western Palearctic Birds. All are in mm, and are given to the nearest mm when taken with a ruler and to one-tenth of a mm when measured with calipers.
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> Literature references
For all specimens in the ZMA bird collection, search or browse the GBIF Data Portal.
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