1. Phylogeny reconstruction of the yellowhammer (Emberiza citrinella) and pine bunting (Emberiza leucocephala) based on song and morphological characters

   • A. S. Rubtsov
   • A. S. Opaev

   OriginalPaper 04 December 2012 Pages: 715 - 728

2. Variation of song and plumage in the western (Phylloscopus trochiloides viridanus) and eastern (Phylloscopus trochiloides plumbeitarsus) forms of the greenish warbler in a sympatry zone: Is the hypothesis of ring speciation true?

   • N. S. Kovylov
   • I. M. Marova
   • V. V. Ivanitskii

   OriginalPaper 04 December 2012 Pages: 729 - 740

3. Social behavior of water bats (Myotis daubentonii, Chiroptera) in an open-air cage

   • E. M. Pervushina
   • A. A. Pervushin
   • K. I. Berdyugin

   OriginalPaper 04 December 2012 Pages: 741 - 751

4. A record of hibernation on the surface of incisor teeth in the hamster Mesocricetus raddei (Nehring, 1894)

   • G. A. Klevezal
   • M. V. Ushakova
   • A. V. Surov

   OriginalPaper 04 December 2012 Pages: 752 - 758

5. New data on the distribution of chromosomal races in the supraspecies complex Cricetulus barabensis sensu lato (Rodentia, Cricetidae) and analysis of reproductive barriers among them

   • N. S. Poplavskaya
   • V. S. Lebedev
   • A. V. Surov

   OriginalPaper 04 December 2012 Pages: 759 - 767

6. Killer whales (Orcinus orca) hunting for walruses (Odobenus rosmarus divergens) near Retkyn Spit, Chukotka

   • N. V. Kryukova
   • E. P. Kruchenkova
   • D. I. Ivanov

   OriginalPaper 04 December 2012 Pages: 768 - 778

7. Trophic relationships of muskoxen (Ovibos moschatus) and reindeer (Rangifer tarandus) on Wrangel Island

   • S. B. Rozenfeld
   • A. R. Gruzdev
   • A. N. Tikhonov

   OriginalPaper 04 December 2012 Pages: 779 - 787