The evolution of female social relationships in nonhuman primates Elisabeth H. M. SterckDavid P. WattsCarel P. van Schaik REVIEW Pages: 291 - 309
Alternative male mating tactics in a cichlid, Pelvicachromis pulcher: a comparison of reproductive effort and success Elisabeth MartinMichael Taborsky ORIGINAL ARTICLES Pages: 311 - 319
Anti-predation behaviour of red colobus monkeys in the presence of chimpanzees Redouan BsharyRonald Noë Article Pages: 321 - 333
Alternative reproductive tactics and male-dimorphism in the horned beetle Onthophagus acuminatus (Coleoptera: Scarabaeidae) Douglas J. Emlen Article Pages: 335 - 341
Utilization of energy substrates during calling activity in tropical frogs Catherine Robb Bevier Article Pages: 343 - 352
Extra-pair paternity and tail ornamentation in the barn swallow Hirundo rustica A. P. MøllerH. Tegelström Article Pages: 353 - 360
Bourgeois and parasitic tactics: do we need collective, functional terms for alternative reproductive behaviours? Michael Taborsky FORUM Pages: 361 - 362