Communal nursing in the evening bat, Nycticeius humeralis G. S. Wilkinson OriginalPaper Pages: 225 - 235
Joint breeding in female burying beetles Anne-Katrin EggertJosef K. Müller OriginalPaper Pages: 237 - 242
Sex-biased maternal expenditure in Rocky Mountain bighorn sheep John T. HoggChristine C. HassDonald A. Jenni OriginalPaper Pages: 243 - 251
Why insects swarm: testing the models for lek mating systems on swarming Empis borealis females Bo. G. SvenssonErik Petersson OriginalPaper Pages: 253 - 261
Intraspecific brood adoption in convict cichlids : a mutual benefit Brian D. WisendenMiles H. A. Keenleyside OriginalPaper Pages: 263 - 269
Acquisition of breeding coloration depends on badge size in male house sparrows Passer domesticus A. P. MøllerJ. Erritzøe OriginalPaper Pages: 271 - 277
Polygyny and male parental care in Savannah sparrows: effects on female fitness Nathaniel T. WheelwrightCheryl B. SchultzPeter J. Hodum OriginalPaper Pages: 279 - 289
How the mountain chickadee procures more food in less time for its nestlings Ralph Grundel OriginalPaper Pages: 291 - 300