Extra-pair paternity in the facultatively polygynous spotless starling, Sturnus unicolor Pedro J. CorderoJosé P. VeigaDavid T. Parkin Original Article 01 April 2003 Pages: 1 - 6
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
Assured fitness returns favor sociality in a mass-provisioning sweat bee, Megalopta genalis (Hymenoptera: Halictidae) Adam R. SmithWilliam T. WcisloSean O'Donnell Original Article 19 March 2003 Pages: 14 - 21
Forced dispersal of juvenile guanacos (Lama guanicoe): causes, variation, and fates of individuals dispersing at different times Ronald J. SarnoMichael S. BankWilliam L. Franklin Original Article 09 April 2003 Pages: 22 - 29
Parasitic common goldeneye (Bucephala clangula) females lay preferentially in safe neighbourhoods Hannu Pöysä Original Article 27 March 2003 Pages: 30 - 35
Effects of fertilization and elevated CO2 on larval food and butterfly nectar amino acid preference in Coenonympha pamphilus L. Jovanne Mevi-SchützMarcel GoverdeAndreas Erhardt Original Article 08 April 2003 Pages: 36 - 43
Complex courtship in a bimodal grasshopper hybrid zone V. Y. VedeninaO. von Helversen Original Article 10 April 2003 Pages: 44 - 54
Male preference for colourful females affected by male size in a marine fish Trond AmundsenElisabet Forsgren Original Article 19 March 2003 Pages: 55 - 64
The effect of female arrivals on mate monopolization in the yellow dung fly Wolf U. BlanckenhornJérôme FreiMaurus Birrer Original Article 25 March 2003 Pages: 65 - 70
Reproductive conflict in animal societies: hierarchy length increases with colony size in queenless ponerine ants Thibaud MonninFrancis L. W. RatnieksCarlos R. F. Brandão Original Article 25 March 2003 Pages: 71 - 79
Reward rate and forager activation in honeybees: recruiting mechanisms and temporal distribution of arrivals P. C. FernándezM. GilW. M. Farina Original Article 08 April 2003 Pages: 80 - 87