Courting virtual rivals increase ejaculate size in sticklebacks (Gasterosteus aculeatus) Marc ZbindenDominique MazziTheo C. M. Bakker Original Article 15 May 2003 Pages: 205 - 209
The effect of food availability on the semilunar courtship rhythm in the fiddler crab Uca lactea (de Haan) (Brachyura: Ocypodidae) Tae Won KimJae C. Choe Original Article 14 May 2003 Pages: 210 - 217
Chemosensory cues allow male lizards Psammodromus algirus to override visual concealment of sexual identity by satellite males Pilar LópezJosé MartínMariano Cuadrado Original Article 16 May 2003 Pages: 218 - 224
Effects of relaxed predation pressure on visual predator recognition in the guppy Jennifer L. KelleyAnne E. Magurran Original Article 20 May 2003 Pages: 225 - 232
Corticosterone levels in relation to migratory readiness in red-eyed vireos (Vireo olivaceus) Mare LõhmusRoland SandbergFrank R.Moore Original Article 15 May 2003 Pages: 233 - 239
Egg size and laying order in relation to offspring sex in the extreme sexually size dimorphic brown songlark, Cinclorhamphus cruralis Michael J. L. MagrathLyanne BrouwerJan Komdeur Original Article 28 May 2003 Pages: 240 - 248
Investment in territorial defence depends on rearing environment in brown trout (Salmo trutta) L. Fredrik SundströmMare LõhmusJörgen I. Johnsson Original Article 14 May 2003 Pages: 249 - 255
Evidence for differential selection and potential adaptive evolution in the worker caste of an inquiline social parasite Seirian SumnerWilliam O. H. HughesJacobus J. Boomsma Original Article 14 May 2003 Pages: 256 - 263
Current versus future reproduction: an experimental test of parental investment decisions using nest desertion by mallards (Anas platyrhynchos) Joshua T. AckermanJohn McA. Eadie Original Article 20 May 2003 Pages: 264 - 273
Variation in fertilisation abilities between hemiclonal hybrid and sexual parental males of sympatric water frogs (Rana lessonae, R. esculenta, R. ridibunda) Heinz-Ulrich ReyerBettina NiedererAttila Hettyey Original Article 03 June 2003 Pages: 274 - 284
Variability in adult group compositions of a prosimian primate Sharon T. PochronPatricia C. Wright Original Article 27 May 2003 Pages: 285 - 293
Primary sex ratios in zebra finches: no evidence for adaptive manipulation in wild and semi-domesticated populations. Richard ZannDavid Runciman Original Article 20 May 2003 Pages: 294 - 302
The role of sexual harassment in cave and surface dwelling populations of the Atlantic molly, Poecilia mexicana (Poeciliidae, Teleostei) Martin PlathJakob ParzefallIngo Schlupp Original Article 20 May 2003 Pages: 303 - 309
Effects of prey quantity on predatory wasps (Polistes dominulus) when patch quality differs Tracy R. ArmstrongNancy E. Stamp Original Article 20 May 2003 Pages: 310 - 319
Forced dispersal of juvenile guanacos (Lama guanicoe): causes, variation, and fates of individuals dispersing at different times Ronald J. SarnoMichael S. BankWilliam L. Franklin Erratum 22 May 2003 Pages: 320 - 320