Paternal expenditure is related to brood sex ratio in polygynous great reed warblers I. NishiumiSatoshi YamagishiChikashi Shimoda Pages: 211 - 217
The mating system of Hanuman langurs: a problem in optimal foraging A. SrivastavaR. I. M. Dunbar Pages: 219 - 226
Response of American redstarts (suborder Passeri) and least flycatchers (suborder Tyranni) to heterospecific playback: the role of song in aggressive interactions and interference competition P. R. MartinJ. R. FotheringhamRaleigh J. Robertson Pages: 227 - 235
Reproductive conflict in honey bees: a stalemate of worker egg-laying and policing P. Kirk Visscher Pages: 237 - 244
Synchrony in egg-laying and reproductive success of neighboring common murres, Uria aalge E. C. MurphyJ. H. Schauer Pages: 245 - 258
Role of sex and breeding status in grooming and total tick load of impala M. S. MooringA. A. McKenzieBenjamin L. Hart Pages: 259 - 266
The habitat saturation hypothesis and sociality in an allodapine bee: cooperative nesting is not “making the best of a bad situation” N. J. BullMichael P. Schwarz Pages: 267 - 274
Queen longevity, queen adoption, and posthumous indirect fitness in the facultatively polygynous ant Myrmica tahoensis Jay D. Evans Pages: 275 - 284