Frog call intensities and sound propagation in the South American temperate forest region Mario PennaRigoberto Solís Original articles Pages: 371 - 381
Sex ratio, sexual dimorphism and mating structure in bethylid wasps Ian C. W. HardyPeter J. Mayhew Article Pages: 383 - 395
The roles of echolocation and olfaction in two Neotropical fruit-eating bats, Carollia perspicillata and C. castanea, feeding on Piper Wibke ThiesElisabeth K. V. KalkoHans-Ulrich Schnitzler Article Pages: 397 - 409
To whom it may concern: the transmission and function of chemical signals in Lemur catta Peter M. Kappeler Article Pages: 411 - 421
Helpers-at-the-nest have the same provisioning rule as parents: experimental evidence from play-backs of chick begging Jonathan Wright Article Pages: 423 - 429
Need and nestmates affect begging in tree swallows Marty L. LeonardAndrew G. Horn Article Pages: 431 - 436
Song-type sharing in song sparrows: implications for repertoire function and song learning Melissa HughesStephen NowickiSusan Peters Article Pages: 437 - 446
Patterns of parental provisioning covary with male morphology in a horned beetle (Onthophagus taurus) (Coleoptera: Scarabaeidae) John HuntLeigh W. Simmons Article Pages: 447 - 451
