Paternal care and the cost of polygyny in the green dart-poison frog Kyle Summers OriginalPaper Pages: 307 - 313
Extra-pair paternity and intraspecific brood parasitism in wild zebra finches Taeniopygia guttata, revealed by DNA fingerprinting T. R. BirkheadT. BurkeA. P. Krupa OriginalPaper Pages: 315 - 324
Mechanisms of sperm competition in birds: mathematical models C. M. LessellsT. R. Birkhead OriginalPaper Pages: 325 - 337
Solitary and eusocial nests in a population of Augochlorella striata (Provancher) (Hymenoptera; Halictidae) at the northern edge of its range Laurence Packer OriginalPaper Pages: 339 - 344
Sexual conflict in the house sparrow: interference between polygynously mated females versus asymmetric male investment José P. Veiga OriginalPaper Pages: 345 - 350
Costs and benefits of home range shifts among vervet monkeys (Cercopithecus aethiops) in Amboseli National Park, Kenya Lynne A. IsbellDorothy L. CheneyRobert M. Seyfarth OriginalPaper Pages: 351 - 358
Forager specialization and the control of nest repair in Polybia occidentalis Olivier (Hymenoptera : Vespidae) S. O'DonnellR. L. Jeanne OriginalPaper Pages: 359 - 364
The influence of maternal rank and infant sex on maternal investment trends in rhesus macaques: birth sex ratios, inter-birth intervals and suckling patterns M. Gomendio OriginalPaper Pages: 365 - 375
Colony energy requirements affect the foraging currency of bumble bees Ralph V. CartarLawrence M. Dill OriginalPaper Pages: 377 - 383