1. Fighting without weaponry: a review of male-male contest competition in butterflies

   • Darrell J. Kemp
   • Christer Wiklund

   Review Pages: 429 - 442

2. Female mate choice in the gray treefrog (Hyla versicolor) in three experimental environments

   • Joshua J. Schwartz
   • Bryant W. Buchanan
   • H. Carl Gerhardt

   Original Article Pages: 443 - 455

3. Does egg colour affect predation rate on open passerine nests?

   • Karel Weidinger

   Original Article Pages: 456 - 464

4. Courting male garter snakes (Thamnophis sirtalis parietalis) use multiple cues to identify potential mates

   • R. Shine
   • R.T. Mason

   Original Article Pages: 465 - 473

5. Falling on deaf ears: the adaptive significance of begging in the absence of a parent

   • Amber E. Budden
   • Jonathan Wright

   Original Article Pages: 474 - 481

6. Smooth-billed ani (Crotophaga ani) predation on butterflies in Mato Grosso, Brazil: risk decreases with increased group size

   • Joanna Burger
   • Michael Gochfeld

   Original Article Pages: 482 - 492

7. Kin selection and the distribution of altruism in relation to degree of kinship in Japanese macaques (Macaca fuscata)

   • Bernard Chapais
   • Liane Savard
   • Carole Gauthier

   Original Article Pages: 493 - 502

8. Polyethism and the importance of context in the alarm reaction of the grass-cutting ant, Atta capiguara

   • W.O.H. Hughes
   • D. Goulson

   Original Article Pages: 503 - 508

9. Worker policing in the bee Apis florea

   • Luke A. Halling
   • Benjamin P. Oldroyd
   • Siriwat Wongsiri

   Original Article Pages: 509 - 513

10. Food supply differentially affects sibling negotiation and competition in the barn owl (Tyto alba)

    • A. Roulin

    Original Article Pages: 514 - 519

11. Ectoparasite loads in free-ranging northern fence lizards, Sceloporus undulatus hyacinthinus: effects of testosterone and sex

    • Matthew Klukowski
    • Craig E. Nelson

    Erratum Pages: 520 - 520

12. The effects of two acanthocephalan parasites, Pomphorhynchus laevis and Polymorphus minutus, on pairing success in male Gammarus pulex (Crustacea: Amphipoda)

    • Loïc Bollache
    • Gérard Gambade
    • Frank Cézilly

    Erratum Pages: 521 - 521