1. Observations on a hybrid between the whooper swan (Cygnus cygnus) and the mute swan (Cygnus olor)

   • E. N. Panov
   • E. Yu. Pavlova

   OriginalPaper 24 December 2010 Pages: 759 - 767

2. Advertising vocalization of the clamorous reed warbler (Acrocephalus stentoreus, Sylviidae)

   • A. S. Opaev
   • V. V. Ivanitskii

   OriginalPaper 24 December 2010 Pages: 768 - 779

3. Study of the hunting behavior of windhounds by means of GPS tracking: Quantitative characteristics of prey search and coursing

   • A. V. Shubkina
   • A. S. Severtsov
   • K. V. Chepeleva

   OriginalPaper 24 December 2010 Pages: 780 - 794

4. Microscopic anatomy and fine structure of the skeleton-heart-kidney complex in Saccoglossus mereschkowskii (Hemichordata, Enteropneusta): 1. Stalk skeleton

   • O. V. Ezhova
   • V. V. Malakhov

   OriginalPaper 24 December 2010 Pages: 795 - 806

5. Reproduction of the Siberian salamander, Salamandrella keyserlingii (Amphibia, Caudata, Hynobiidae), in water bodies on permafrost in Northeastern Asia

   • A. V. Alfimov
   • D. I. Berman

   OriginalPaper 24 December 2010 Pages: 807 - 822

6. Behavior of crested auklets (Aethia cristatella, Charadriiformes, Alcidae) in the breeding season: Visual and acoustic displays

   • V. A. Zubakin
   • I. A. Volodin
   • E. N. Lapshina

   OriginalPaper 24 December 2010 Pages: 823 - 835

7. Dynamics of incisor growth and daily increments on the incisor surface in three species of small rodents

   • G. A. Klevezal

   OriginalPaper 24 December 2010 Pages: 836 - 845

8. Individual, population, and geographic differentiation in advertising song of the Blyth’s reed warbler, Acrocephalus dumetorum (Sylvidae)

   • I. M. Marova
   • V. V. Ivanitskii
   • O. D. Veprintseva

   OriginalPaper 24 December 2010 Pages: 846 - 860