Nymphal density, behavioral development, and life history in a field cricket Petri T. NiemeläAnssi VainikkaRaine Kortet Original Paper 18 January 2012 Pages: 645 - 652
The alarm call system of wild black-fronted titi monkeys, Callicebus nigrifrons Cristiane CäsarRichard ByrneKlaus Zuberbühler Original Paper 13 January 2012 Pages: 653 - 667
Fine-scale flower-visiting behavior revealed by using a high-speed camera Ryota L. SakamotoShin-Ichi MorinagaNobumitsu Kawakubo Original Paper 10 January 2012 Pages: 669 - 674
A possible phylogenetically conserved urgency response of great tits (Parus major) towards allopatric mobbing calls Christoph Randler Original Paper 13 January 2012 Pages: 675 - 681
Chick-a-dee call variation in the context of “flying” avian predator stimuli: a field study of Carolina chickadees (Poecile carolinensis) Christopher E. ZachauTodd M. Freeberg Original Paper 26 January 2012 Pages: 683 - 690
Facultative pheromonal mimicry in snakes: “she-males” attract courtship only when it is useful R. ShineT. LangkildeR. T. Mason Original Paper 26 January 2012 Pages: 691 - 695
Seasonal decline of offspring quality in the European starling Sturnus vulgaris: an immune challenge experiment Lorenzo SerraSimone PirrelloDiego Rubolini Original Paper 26 January 2012 Pages: 697 - 709
Better the nest site you know: decision-making during nest migrations by the Pharaoh’s ant Sophie E. F. EvisonKatie A. WebsterWilliam O. H. Hughes Original Paper 28 January 2012 Pages: 711 - 720
Reproductive competition and fecal testosterone in wild male giant pandas (Ailuropoda melanoleuca) Yonggang NieRonald R. SwaisgoodFuwen Wei Original Paper 03 February 2012 Pages: 721 - 730
Adjustment of female reproductive investment according to male carotenoid-based ornamentation in a gallinaceous bird Carlos Alonso-AlvarezLorenzo Pérez-RodríguezFrancois Mougeot Original Paper 15 February 2012 Pages: 731 - 742
Body size, demography and foraging in a socially plastic sweat bee: a common garden experiment Jeremy FieldRobert PaxtonCatherine Bridge Original Paper 10 February 2012 Pages: 743 - 756
Strategic use of allopreening in family-living wrens Sharon A. Gill Original Paper 11 February 2012 Pages: 757 - 763
Rapid onset of mate quality assessment via chemical signals in a woodland salamander (Plethodon cinereus) Adam J. Chouinard Original Paper 15 February 2012 Pages: 765 - 775
Territorial resource valuation deviates from habitat quality in an ecologically trapped, long-distance migratory bird Franck A. HollanderNicolas TiteuxHans Van Dyck Original Paper 11 February 2012 Pages: 777 - 783
Who’s what? Prompt recognition of social status in crayfish Laura AquiloniVera GonçalvesFrancesca Gherardi Original Paper 24 February 2012 Pages: 785 - 790
Social context-dependent immune gene expression in bumblebees (Bombus terrestris) Jeanny RichterSophie HelbingH. Michael G. Lattorff Original Paper 10 February 2012 Pages: 791 - 796
Social information, conformity and the opportunity costs paid by foraging fish M. M. WebsterK. N. Laland Original Paper 28 February 2012 Pages: 797 - 809
Socially facilitated antipredator behavior by ringed salamanders (Ambystoma annulatum) Adam CraneAlicia MathisCarly McGrane Original Paper 16 February 2012 Pages: 811 - 817
Northern magnetic displacements trigger endogenous fuelling responses in a naive bird migrant Jannika E. BoströmCecilia KullbergSusanne Åkesson Commentary 10 March 2012 Pages: 819 - 821