1. Video submission guidelines

   • Kazuki Tsuji

   Editorial 19 December 2003 Pages: 1 - 3

2. Synchronous diving behavior of Adélie penguins

   • Akinori Takahashi
   • Katsufumi Sato
   • Yasuhiko Naito

   Video Article 09 October 2003 Pages: 5 - 11

   

3. Sex differences in nest defence by the red-backed shrike Lanius collurio: effects of offspring age, brood size, and stage of breeding season

   • Piotr Tryjanowski
   • Artur Goławski

   Article 18 April 2003 Pages: 13 - 16

   

4. Effect of kinship on social behaviors in Brandt's voles (Microtus brandti)

   • Xiaodong Yu
   • Ruyong Sun
   • Jiming Fang

   Article 24 April 2003 Pages: 17 - 22

   

5. Habitat complexity reduces aggression and enhances consumption in crayfish

   • Lynda D. Corkum
   • Daniel J. Cronin

   Article 13 February 2003 Pages: 23 - 27

   

6. Vocal imitation in blindfolded zebra finches (Taeniopygia guttata) is facilitated in the presence of a non-singing conspecific female

   • Patrice Adret

   Article 26 March 2003 Pages: 29 - 35

   

7. The nutritional contribution of males affects the feeding behavior and spatial distribution of females in a bruchid beetle, Bruchidius dorsalis

   • Koh-ichi Takakura

   Article 28 March 2003 Pages: 37 - 42

   

8. Kin structure and colony male reproduction in the hornet Vespa crabro (Hymenoptera: Vespidae)

   • Jun-ichi Takahashi
   • Jun Nakamura
   • Eisuke Hasegawa

   Article 07 October 2003 Pages: 43 - 47

   

9. Ventilating activity at the hornet nest entrance

   • Ksenia Riabinin
   • Maria Kozhevnikov
   • Jacob S. Ishay

   Article 08 July 2003 Pages: 49 - 53

   

10. Signal value of alternating and overlapping singing in the Yellowhammer Emberiza citrinella

    • Tomasz S. Osiejuk
    • Katarzyna Ratyńska
    • Jakub P. Cygan

    Article 07 June 2003 Pages: 55 - 61

    

11. Semilunar courtship rhythm of the fiddler crab Uca lactea in a habitat with great tidal variation

    • Tae Won Kim
    • Kil Won Kim
    • Jae C. Choe

    Article 26 July 2003 Pages: 63 - 68

    

12. Individual (non-social) behavioral acts of hooded cranes Grus monacha wintering in Izumi, Japan

    • Hiroyuki Masatomi

    Article 19 September 2003 Pages: 69 - 83

    

13. Reproductive investment and parental roles in Sabine's gulls Xema sabini

    • Iain J. Stenhouse
    • H. Grant Gilchrist
    • William A. Montevecchi

    Article 30 August 2003 Pages: 85 - 89

14. Inter-colony and sex differences in the effects of parental body condition and foraging effort on the brood growth of Adélie penguins

    • Yutaka Watanuki
    • Akinori Takahashi
    • Charles A. Bost

    Article 06 September 2003 Pages: 91 - 98

    

15. Selection of age classes of Sasa leaves by caterpillars of the skipper butterfly Thoressa varia using albo-margination of overwintered leaves

    • Jun-Ya Ide

    Article 27 September 2003 Pages: 99 - 103

    

16. Function of the web box as an anti-predator barrier in the spider mite, Schizotetranychus recki

    • Mituru Horita
    • Anthony R. Chittenden
    • Yutaka Saito

    Short Communication 08 July 2003 Pages: 105 - 108

17. Nonlethal indirect effects of a native predatory mite, Amblyseius womersleyi Schicha (Acari:Phytoseiidae), on the phytophagous mite Tetranychus kanzawai Kishida (Acari: Tetranychidae)

    • Keiko Oku
    • Shuichi Yano
    • Akio Takafuji

    Short Communication 26 July 2003 Pages: 109 - 112

    

18. Age-specific fertility rates of the Jeju pony ( Equus caballus)

    • Jeong R. Rho
    • Robert B. Srygley
    • Jae C. Choe

    Short Communication 07 August 2003 Pages: 113 - 117

    

19. Early male production is not linked to a reproductive strategy in the Japanese paper wasp, Polistes chinensis antennalis (Hymenoptera: Vespidae)

    • Koji Tsuchida
    • Takaharu Saigo
    • Kazuki Takeuchi

    Short Communication 27 September 2003 Pages: 119 - 121

20. The predatory behaviour of common kestrels facing various types of prey

    • Davide Csermely
    • Luca Bagni

    Erratum 27 August 2003 Pages: 123 - 123