1. Paternal care and the cost of polygyny in the green dart-poison frog

   • Kyle Summers

   OriginalPaper Pages: 307 - 313

2. Extra-pair paternity and intraspecific brood parasitism in wild zebra finches Taeniopygia guttata, revealed by DNA fingerprinting

   • T. R. Birkhead
   • T. Burke
   • A. P. Krupa

   OriginalPaper Pages: 315 - 324

3. Mechanisms of sperm competition in birds: mathematical models

   • C. M. Lessells
   • T. R. Birkhead

   OriginalPaper Pages: 325 - 337

4. 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

5. Sexual conflict in the house sparrow: interference between polygynously mated females versus asymmetric male investment

   • José P. Veiga

   OriginalPaper Pages: 345 - 350

6. Costs and benefits of home range shifts among vervet monkeys (Cercopithecus aethiops) in Amboseli National Park, Kenya

   • Lynne A. Isbell
   • Dorothy L. Cheney
   • Robert M. Seyfarth

   OriginalPaper Pages: 351 - 358

7. Forager specialization and the control of nest repair in Polybia occidentalis Olivier (Hymenoptera : Vespidae)

   • S. O'Donnell
   • R. L. Jeanne

   OriginalPaper Pages: 359 - 364

8. 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

9. Colony energy requirements affect the foraging currency of bumble bees

   • Ralph V. Cartar
   • Lawrence M. Dill

   OriginalPaper Pages: 377 - 383