1. Parental investment in southern elephant seals, Mirounga leonina

   • T. S. McCann
   • M. A. Fedak
   • J. Harwood

   OriginalPaper Pages: 81 - 87

2. Correlates of copulatory success in a fallow deer lek

   • Marco Apollonio
   • Marco Festa-Bianchet
   • Franco Mari

   OriginalPaper Pages: 89 - 97

3. Relationships between spacing behavior and growth rates: A field study of lizard feeding territories

   • J. A. Stamps
   • P. K. Eason

   OriginalPaper Pages: 99 - 107

4. Parental investment and the secondary sex ratio in northern elephant seals

   • Burney J. Le Bœuf
   • Richard Condit
   • Joanne Reiter

   OriginalPaper Pages: 109 - 117

5. Mating success of male hermit crabs in shell generalist and shell specialist species

   • Brian A. Hazlett

   OriginalPaper Pages: 119 - 128

6. Nest defence by song sparrows: methodological and life history considerations

   • Patrick J. Weatherhead

   OriginalPaper Pages: 129 - 136

7. Male contests in the scarlet rosefinch (Carpodacus erythrinus) in relation to asymmetries in resource holding power and pairing status

   • Mats Björklund

   OriginalPaper Pages: 137 - 140

8. Agonistic interactions in siskin flocks: Why are dominants sometimes subordinate?

   • J. C. Senar
   • M. Camerino
   • N. B. Metcalfe

   OriginalPaper Pages: 141 - 145

9. Geographic variation in social organization of Galápagos mockingbirds: ecological correlates of group territoriality and cooperative breeding

   • Robert L. Curry

   OriginalPaper Pages: 147 - 160