1. Extra-pair paternity in the facultatively polygynous spotless starling, Sturnus unicolor

   • Pedro J. Cordero
   • José P. Veiga
   • David T. Parkin

   Original Article 01 April 2003 Pages: 1 - 6

   

2. Twilight fighting in the evening brown butterfly, Melanitis leda (L.) (Nymphalidae): age and residency effects

   • Darrell J. Kemp

   Original Article 03 April 2003 Pages: 7 - 13

   

3. Assured fitness returns favor sociality in a mass-provisioning sweat bee, Megalopta genalis (Hymenoptera: Halictidae)

   • Adam R. Smith
   • William T. Wcislo
   • Sean O'Donnell

   Original Article 19 March 2003 Pages: 14 - 21

   

4. Forced dispersal of juvenile guanacos (Lama guanicoe): causes, variation, and fates of individuals dispersing at different times

   • Ronald J. Sarno
   • Michael S. Bank
   • William L. Franklin

   Original Article 09 April 2003 Pages: 22 - 29

   

5. Parasitic common goldeneye (Bucephala clangula) females lay preferentially in safe neighbourhoods

   • Hannu Pöysä

   Original Article 27 March 2003 Pages: 30 - 35

   

6. Effects of fertilization and elevated CO₂ on larval food and butterfly nectar amino acid preference in Coenonympha pamphilus L.

   • Jovanne Mevi-Schütz
   • Marcel Goverde
   • Andreas Erhardt

   Original Article 08 April 2003 Pages: 36 - 43

   

7. Complex courtship in a bimodal grasshopper hybrid zone

   • V. Y. Vedenina
   • O. von Helversen

   Original Article 10 April 2003 Pages: 44 - 54

   

8. Male preference for colourful females affected by male size in a marine fish

   • Trond Amundsen
   • Elisabet Forsgren

   Original Article 19 March 2003 Pages: 55 - 64

   

9. The effect of female arrivals on mate monopolization in the yellow dung fly

   • Wolf U. Blanckenhorn
   • Jérôme Frei
   • Maurus Birrer

   Original Article 25 March 2003 Pages: 65 - 70

   

10. Reproductive conflict in animal societies: hierarchy length increases with colony size in queenless ponerine ants

    • Thibaud Monnin
    • Francis L. W. Ratnieks
    • Carlos R. F. Brandão

    Original Article 25 March 2003 Pages: 71 - 79

    

11. Reward rate and forager activation in honeybees: recruiting mechanisms and temporal distribution of arrivals

    • P. C. Fernández
    • M. Gil
    • W. M. Farina

    Original Article 08 April 2003 Pages: 80 - 87