1. Bisexually bonded ranging in chimpanzees (Pan troglodytes verus)

   • Julia Lehmann
   • Christophe Boesch

   Original Article 14 January 2005 Pages: 525 - 535

   

2. Differing rates of extra-group paternity between two populations of the Australian magpie (Gymnorhina tibicen)

   • Kate L. Durrant
   • Jane M. Hughes

   Original Article 13 January 2005 Pages: 536 - 545

   

3. Breeding site choice fails to explain interannual associations of female grey seals

   • P. P. Pomeroy
   • P. R. Redman
   • S. D. Twiss

   Original Article 13 January 2005 Pages: 546 - 556

   

4. No evidence for acoustic mate-guarding in duetting buff-breasted wrens (Thryothorus leucotis)

   • Sharon A. Gill
   • Maarten J. Vonhof
   • James S. Quinn

   Original Article 13 January 2005 Pages: 557 - 565

   

5. Insights into the costs of complex maternal care behavior in the burrower bug (Sehirus cinctus)

   • Aneil F. Agrawal
   • Nicole Combs
   • Edmund D. Brodie III

   Original Article 13 January 2005 Pages: 566 - 574

   

6. Social recognition in sticklebacks: the role of direct experience and habitat cues

   • Ashley J. W. Ward
   • Robert I. Holbrook
   • Paul J. B. Hart

   Original Article 13 January 2005 Pages: 575 - 583

   

7. Female egg investment in relation to male sexual traits and the potential for transgenerational effects in sexual selection

   • Tobias Uller
   • Johan Eklöf
   • Sofia Andersson

   Original Article 13 January 2005 Pages: 584 - 590

   

8. All at sea: aquatic life modifies mate-recognition modalities in sea snakes (Emydocephalus annulatus, Hydrophiidae)

   • R. Shine

   Original Article 13 January 2005 Pages: 591 - 598

   

9. Analysis of bumblebee visitation sequences within single bouts: implication of the overstrike effect on short-term memory

   • Hiroshi S. Ishii

   Original Article 13 January 2005 Pages: 599 - 610

   

10. Reputation is valuable within and outside one’s own social group

    • Dirk Semmann
    • Hans-Jürgen Krambeck
    • Manfred Milinski

    Original Article 12 January 2005 Pages: 611 - 616

    

11. Does interaction between bumblebees (Bombus ignitus) reduce their foraging area?: bee-removal experiments in a net cage

    • Takashi T. Makino
    • Satoki Sakai

    Original Article 21 December 2004 Pages: 617 - 622

    

12. Individual recognition of neighbors by song in a suboscine bird, the alder flycatcher Empidonax alnorum

    • Scott F. Lovell
    • M. Ross Lein

    Original Article 23 December 2004 Pages: 623 - 630

    

13. The effect of helpers on artificially increased brood size in sociable weavers (Philetairus socius)

    • Rita Covas
    • Morné A. du Plessis

    Original Article 23 December 2004 Pages: 631 - 636