1. Alternative mating tactics and the law of Diminishing Returns: The Satellite Threshold Model

   • Edward C. Waltz

   OriginalPaper Pages: 75 - 83

2. Nest defense and central place foraging: A model and experiment

   • Steven Martindale

   OriginalPaper Pages: 85 - 89

3. The association of female kin in the arctic ground squirrel Spermophilus parryii

   • Ian G. McLean

   OriginalPaper Pages: 91 - 99

4. Comparative costs of promiscuity and monogramy: A test of reproductive effort theory

   • William Post
   • Jon S. Greenlaw

   OriginalPaper Pages: 101 - 107

5. Territorial defense and lek behavior of the black swallowtail butterfly, Papilio polyxenes

   • Robert C. Lederhouse

   OriginalPaper Pages: 109 - 118

6. Echolocation by cave swiftlets

   • Donald R. Griffin
   • David Thompson

   OriginalPaper Pages: 119 - 123

7. Foraging differences between cross-fostered honeybee workers (Apis mellifera) of European and Africanized races

   • Mark L. Winston
   • Susan J. Katz

   OriginalPaper Pages: 125 - 129

8. The mating system of the brown hyaena, Hyaena brunnea in the southern Kalahari

   • M. G. L. Mills

   OriginalPaper Pages: 131 - 136

9. Colony founding in Myrmecocystus mimicus wheeler (Hymenoptera: Formicidae) and the evolution of foundress associations

   • Stephen H. Bartz
   • Bert Hölldobler

   OriginalPaper Pages: 137 - 147

10. Fish in larger shoals find food faster

    • T. J. Pitcher
    • A. E. Magurran
    • I. J. Winfield

    OriginalPaper Pages: 149 - 151

11. Sunset and the orientation of a nocturnal bird migrant: A mirror experiment

    • Frank R. Moore

    OriginalPaper Pages: 153 - 155