Foraging costs of a tail ornament: Experimental evidence from two populations of barn swallows Hirundo rustica with different degrees of sexual size dimorphism A. P. MollerF. de LopeJ. M. López Caballero OriginalPaper Pages: 289 - 295
Vibrational communication between hitchhikers and foragers in leaf-cutting ants (Atta cephalotes) Flavio RocesBert Hölldobler OriginalPaper Pages: 297 - 302
Assessment and individual recognition of opponents in the pygmy swordtails Xiphophorus nigrensis and X. multilineatus Molly R. MorrisLeila GassMichael J. Ryan OriginalPaper Pages: 303 - 310
Is sex-biased maternal care limited by total maternal expenditure in polygynous ungulates? Christophe PélabonJean-Michel GaillardChristine Portier OriginalPaper Pages: 311 - 319
Echolocation call design and limits on prey size: a case study using the aerial-hawking bat Nyctalus leisleri Dean A. WatersJens RydellGareth Jones OriginalPaper Pages: 321 - 328
Levels of polyandry and intracolonial genetic relationships in Apis florea Benjamin P. OldroydAdam J. SmolenskiRoss H. Crozier OriginalPaper Pages: 329 - 335
Does cadence of Iguana iguana displays facilitate individual recognition? John A. Phillips OriginalPaper Pages: 337 - 342
Why are larger convict cichlid (Cichlasoma nigrofasciatum) fry sometimes adopted into broods of smaller fry? Shannon A. FraserMiles H. A. Keenleyside OriginalPaper Pages: 343 - 347
Within-brood patterns of paternity and paternal behavior in red-winged blackbirds David F. WestneatAnne B. ClarkD. F. Westneat OriginalPaper Pages: 349 - 356
High degree of polyandry in Apis dorsata queens detected by DNA microsatellite variability Robin F. A. MoritzPer KrygerSalim Tingek OriginalPaper Pages: 357 - 363