Does female plumage coloration signal parental quality? A male removal experiment with the bluethroat (Luscinia s. svecica) P. T. SmisethT. Amundsen Original Article Pages: 205 - 212
Nestling provisioning in polygynous great reed warblers (Acrocephalus arundinaceus): do males bring larger prey to compensate for fewer nest visits? D. SejbergS. BenschD. Hasselquist Original Article Pages: 213 - 219
Social and mating system of cooperatively breeding laughing kookaburras (Dacelo novaeguineae) S. LeggeA. Cockburn Original Article Pages: 220 - 229
Ectoparasites of house sparrows (Passer domesticus): an experimental test of the immunocompetence handicap hypothesis and a new model A. PoianiA. R. GoldsmithM. R. Evans Original Article Pages: 230 - 242
Aging and improving reproductive success in horses: declining residual reproductive value or just older and wiser? E. Z. CameronW. L. LinklaterE. O. Minot Original Article Pages: 243 - 249
Old endemics and new invaders: alternative strategies of passerines for living in the Australian environment E. GeffenY. Yom-Tov Original Article Pages: 250 - 257
Recognising one’s enemies: a functional approach to risk assessment by prey P. GrostalM. Dicke Original Article Pages: 258 - 264
Response thresholds to sucrose predict foraging division of labor in honeybees T. PankiwR.E. Page Jr Original Article Pages: 265 - 267
Evolution of worker sterility in honey-bees (Apis mellifera): how anarchistic workers evade policing by laying eggs that have low removal rates B. P. OldroydF. L. W. Ratnieks Original Article Pages: 268 - 273
Defense by exploitation in the Florida carpenter ant, Camponotus floridanus, at an extrafloral nectar resource H. Dreisig Original Article Pages: 274 - 279
Leg ornamentation and the efficacy of courtship display in four species of wolf spider (Araneae: Lycosidae) E. A. HebetsG. W. Uetz Original Article Pages: 280 - 286
Fluctuating asymmetry and sperm transfer in male decorated field crickets (Gryllodes sigillatus) D. C. FarmerC. J. Barnard Original Article Pages: 287 - 292