Behavioral Ecology

Within-clutch patterns of yolk testosterone vary with the onset of incubation in black-headed gulls
pp. 893-397(-495)
Authors: Wendt Müller; Corine M. Eising; Cor Dijkstra; Ton G. G. Groothuis

When are two heads better than one? Visual perception and information transfer affect vigilance coordination in foraging groups
pp. 898-906(9)
Authors: Esteban Fernández-Juricic; Benjamin Kerr; Peter A. Bednekoff; David W. Stephens

Reproductive promiscuity in the splendid fairy-wren: effects of group size and auxiliary reproduction
pp. 907-915(9)
Authors: Michael S. Webster; Keith A. Tarvin; Elaina M. Tuttle; Stephen Pruett-Jones

Is there an optimal number of helpers in Alpine marmot family groups?
pp. 916-924(9)
Authors: Dominique Allainé; Fabienne Theuriau

The effects of habitat- and diet-based cues on association preferences in three-spined sticklebacks
pp. 925-929(5)
Authors: Ashley J. W. Ward; Paul J. B. Hart; Jens Krause

Testosterone, immunocompetence, and honest sexual signaling in male red grouse
pp. 930-937(8)
Authors: François Mougeot; Justin R. Irvine; Linzi Seivwright; Steve M. Redpath; Stuart Piertney

Associations between first encounters and ensuing social relations within dyads of two species of lacertid lizards
pp. 938-945(8)
Authors: Sharon Downes; Dirk Bauwens

Chic chicks: the evolution of chick ornamentation in rails
pp. 946-951(6)
Authors: Elizabeth A. Krebs; David A. Putland

Pup escorting in the communal breeding banded mongoose: behavior, benefits, and maintenance
pp. 952-960(9)
Author: Jason S. Gilchrist

Extreme polygyny among southern elephant seals on Sea Lion Island, Falkland Islands
pp. 961-969(9)
Authors: Anna Fabiani; Filippo Galimberti; Simona Sanvito; A. Rus Hoelzel

Reproductive monopoly enforced by sterile police workers in a queenless ant
pp. 970-975(6)
Authors: Virginie Cuvillier-Hot; Alain Lenoir; Christian Peeters

Body size–dependent gender role in a simultaneous hermaphrodite freshwater snail, Physa acuta
pp. 976-981(6)
Authors: Kako Ohbayashi-Hodoki; Fumiko Ishihama; Masakazu Shimada

Ultraviolet reflection and predation risk in diurnal and nocturnal Lepidoptera
pp. 982-987(6)
Authors: Anne Lyytinen; Leena Lindström; Johanna Mappes

Kinship in colonial tuco-tucos: evidence from group composition and population structure
pp. 988-996(9)
Authors: Eileen A. Lacey; John R. Wieczorek

Sex ratio variation in the cooperatively breeding alpine marmot Marmota marmota
pp. 997-1002(6)
Authors: Dominique Allainé

Modification of the visual background increases the conspicuousness of golden-collared manakin displays
pp. 1003-1010(8)
Authors: J. Albert C. Uy; John A. Endler

Effects of territorial intrusions on eavesdropping neighbors: communication networks in nightingales
pp. 1011-1015(5)
Authors: Marc Naguib; Valentin Amrhein; Hansjoerg P. Kunc

Nocturnal anti-predator adaptations in eared and earless Nearctic Lepidoptera
pp. 1016-1022(7)
Authors: Amanda R. Soutar; James H. Fullard

The relation between dominance and exploratory behavior is context-dependent in wild great tits
pp. 1023-1030(8)
Authors: Niels Jeroen Dingemanse; Piet de Goede

Nest size predicts the effect of food supplementation to magpie nestlings on their immunocompetence: an experimental test of nest size indicating parental ability
pp. 1031-1036(6)
Authors: Liesbeth De Neve; Juan José Soler; Manuel Soler; Tomás Pérez-Contreras

Social wasps desert the colony and aggregate outside if parasitized: parasite manipulation?
pp. 1037-1043(7)
Authors: David P. Hughes; Jeyaraney Kathirithamby; Stefano Turillazzi; Laura Beani

A farewell to Bonferroni: the problems of low statistical power and publication bias
pp. 1044-1045(2)
Author: Shinichi Nakagawa