1. Communal nursing in the evening bat, Nycticeius humeralis

   • G. S. Wilkinson

   OriginalPaper Pages: 225 - 235

2. Joint breeding in female burying beetles

   • Anne-Katrin Eggert
   • Josef K. Müller

   OriginalPaper Pages: 237 - 242

3. Sex-biased maternal expenditure in Rocky Mountain bighorn sheep

   • John T. Hogg
   • Christine C. Hass
   • Donald A. Jenni

   OriginalPaper Pages: 243 - 251

4. Why insects swarm: testing the models for lek mating systems on swarming Empis borealis females

   • Bo. G. Svensson
   • Erik Petersson

   OriginalPaper Pages: 253 - 261

5. Intraspecific brood adoption in convict cichlids : a mutual benefit

   • Brian D. Wisenden
   • Miles H. A. Keenleyside

   OriginalPaper Pages: 263 - 269

6. Acquisition of breeding coloration depends on badge size in male house sparrows Passer domesticus

   • A. P. Møller
   • J. Erritzøe

   OriginalPaper Pages: 271 - 277

7. Polygyny and male parental care in Savannah sparrows: effects on female fitness

   • Nathaniel T. Wheelwright
   • Cheryl B. Schultz
   • Peter J. Hodum

   OriginalPaper Pages: 279 - 289

8. How the mountain chickadee procures more food in less time for its nestlings

   • Ralph Grundel

   OriginalPaper Pages: 291 - 300