Play behavior and motor development in juvenile Belding’s ground squirrels (Spermophilus beldingi) Scott NunesEva-Maria MueckeLesley T. Lancaster Original Article 03 March 2004 Pages: 97 - 105
Bat serenades—complex courtship songs of the sac-winged bat (Saccopteryx bilineata) Oliver BehrOtto von Helversen Original Article 04 March 2004 Pages: 106 - 115
Populations of Pecos pupfish (Cyprinodon pecosensis) differ in their susceptibility to hybridization with sheepshead minnow (C. variegatus) Astrid Kodric-BrownJonathan A. Rosenfield Original Article 18 February 2004 Pages: 116 - 123
Orientation of juvenile barn swallows (Hirundo rustica) tested in Emlen funnels during autumn migration Dimitri GiunchiN. Emilio Baldaccini Original Article 10 March 2004 Pages: 124 - 131
Multimodal signals, imperfect information, and identification of sex in red-backed salamanders (Plethodon cinereus) Robert B. PageRobert G. Jaeger Original Article 12 March 2004 Pages: 132 - 139
Baboon loud calls advertise male quality: acoustic features and their relation to rank, age, and exhaustion Julia FischerDawn M. KitchenDorothy L. Cheney Original Article 21 January 2004 Pages: 140 - 148
Unexpected sex ratio adjustment in a colonial cooperative bird: pairs with helpers produce more of the helping sex whereas pairs without helpers do not Claire DoutrelantRita CovasMorné du Plessis Original Article 27 February 2004 Pages: 149 - 154
Findings on spatial foraging patterns of bumblebees (Bombus ignitus) from a bee-tracking experiment in a net cage Takashi T. MakinoSatoki Sakai Original Article 18 March 2004 Pages: 155 - 163
Predator inspection behaviour in three-spined sticklebacks (Gasterosteus aculeatus): body size, local predation pressure and cooperation Craig A. WallingNick DawnayJonathan Wright Original Article 13 February 2004 Pages: 164 - 170
Shell choice in Pagurus longicarpus hermit crabs: does predation threat influence shell selection behavior? Randi D. RotjanJulia BlumSara M. Lewis Original Article 10 March 2004 Pages: 171 - 176
Ontogenetic changes in social behaviour in the forest tent caterpillar, Malacosoma disstria Emma DesplandSara Hamzeh Original Article 10 March 2004 Pages: 177 - 184
Do mountain log skinks (Pseudemoia entrecasteauxii) modify their behaviour in the presence of two predators? Jessica Stapley Original Article 06 March 2004 Pages: 185 - 189