The Timing of Passerine Bird Nesting in the Yamal Peninsula

V.K. Ryabitsev*, E. A. Polents*, N. S. Alekseeva*, Yu. A. Tyul’kin**, and V. V. Tarasov*

*Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vos’mogo Marta 202, Ekaterinburg,
620144 Russia

**Udmurt State University, ul. Krasnogvardeiskaya 71, Izhevsk, 426037 Russia

Received December 11, 1997

Abstract—Time of nesting of several passerine species in years with different conditions in spring was analyzed
on the basis of long-term observations performed at two field stations located in middle and northern Yamal.

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