Sex ratio manipulation and decreased growth of male offspring of undernourished golden hamsters (Mesocricetus auratus) Jay B. LabovU. William HuckRobert D. Lisk OriginalPaper Pages: 241 - 249
Whistle repertoires of two bottlenosed dolphins, Tursiops truncatus: mimicry of signature whistles? Peter Tyack OriginalPaper Pages: 251 - 257
Foraging strategies of the marine iguana, Amblyrhynchus cristatus Krisztina G. K. TrillmichFritz Trillmich OriginalPaper Pages: 259 - 266
Male dominance, female choice and male copulatory behavior in two species of voles (Microtus ochrogaster and Microtus montanus) Lawrence E. ShapiroDonald A. Dewsbury OriginalPaper Pages: 267 - 274
Social organization in free-living prairie voles, Microtus ochrogaster Lowell L. GetzJoyce E. Hofmann OriginalPaper Pages: 275 - 282
Eusociality and extraordinary sex ratios in the spider Anelosimus eximius (Araneae: Theridiidae) Fritz Vollrath OriginalPaper Pages: 283 - 287
Male choice and competition in Tetraopes tetraophthalmus: effects of local sex ratio variation W. S. Lawrence OriginalPaper Pages: 289 - 296
Infrasonic calls of the Asian elephant (Elephas maximus) Katharine B. PayneWilliam R. Langbauer Jr.Elizabeth M. Thomas OriginalPaper Pages: 297 - 301
Sexual selection and spring arrival times of red-necked and Wilson's phalaropes John D. ReynoldsMark A. ColwellFred Cooke OriginalPaper Pages: 303 - 310
The unsung songs of great tits (Parus major): learning neighbours' songs for discrimination P. K. McGregorM. I. Avery OriginalPaper Pages: 311 - 316