Radio tagging reveals the roles of corpulence, experience and social information in ant decision making Elva J. H. RobinsonThomas O. RichardsonNigel R. Franks Original Paper 24 December 2008 Pages: 627 - 636
Resource allocation varies with parental sex and brood size in the asynchronously hatching green-rumped parrotlet (Forpus passerinus) Amber E. BuddenSteven R. Beissinger Original Paper Open access 14 January 2009 Pages: 637 - 647
Fissioning minimizes ranging costs in spider monkeys: a multiple-level approach Norberto AsensioAmanda H. KorstjensFilippo Aureli Original Paper 14 January 2009 Pages: 649 - 659
Seasonal decline in reproductive performance varies with colony size in the fairy martin, Petrochelidon ariel Michael J. L. MagrathPeter SantemaNaomi E. Langmore Original Paper 14 January 2009 Pages: 661 - 672
Antipredator strategies of house finches: are urban habitats safe spots from predators even when humans are around? Anna ValcarcelEsteban Fernández-Juricic Original Paper 17 January 2009 Pages: 673 - 685
Do stress hormones suppress helper reproduction in the cooperatively breeding red-cockaded woodpecker (Picoides borealis)? A. L. MaluegJ. R. WaltersI. T. Moore Original Paper 14 January 2009 Pages: 687 - 698
Provenance and threat-sensitive predator avoidance patterns in wild-caught Trinidadian guppies Grant E. BrownCamille J. MacnaughtonJean-Guy J. Godin Original Paper 14 January 2009 Pages: 699 - 706
Parent-absent begging in the Brown-headed Cowbird (Molothrus ater): the role of short-term need and nestmate size James W. Rivers Original Paper Open access 14 January 2009 Pages: 707 - 717
Egg coloration in ring-billed gulls (Larus delawarensis): a test of the sexual signaling hypothesis Daniel HanleyStéphanie M. Doucet Original Paper 14 January 2009 Pages: 719 - 729
Love thy neighbour? Social nesting pattern, host mass and nest size affect ectoparasite intensity in Darwin’s tree finches Sonia KleindorferRachael Y. Dudaniec Original Paper 20 January 2009 Pages: 731 - 739
Odour-based species recognition in two sympatric species of sac-winged bats (Saccopteryx bilineata, S. leptura): combining chemical analyses, behavioural observations and odour preference tests Barbara A. CaspersFrank C. SchroederChristian C. Voigt Original Paper 28 January 2009 Pages: 741 - 749
A female evolutionary response when survival is at risk: male harassment mediates early reallocation of resources to increase egg number and size Alex Córdoba-Aguilar Original Paper 28 January 2009 Pages: 751 - 763
SOCPROG programs: analysing animal social structures Hal Whitehead Methods 16 January 2009 Pages: 765 - 778
Radio tagging reveals the roles of corpulence, experience and social information in ant decision making Elva J. H. RobinsonThomas O. RichardsonNigel R. Franks Erratum 18 February 2009 Pages: 779 - 779