1. Radio tagging reveals the roles of corpulence, experience and social information in ant decision making

   • Elva J. H. Robinson
   • Thomas O. Richardson
   • Nigel R. Franks

   Original Paper 24 December 2008 Pages: 627 - 636

   

2. Resource allocation varies with parental sex and brood size in the asynchronously hatching green-rumped parrotlet (Forpus passerinus)

   • Amber E. Budden
   • Steven R. Beissinger

   Original Paper Open access 14 January 2009 Pages: 637 - 647

   

3. Fissioning minimizes ranging costs in spider monkeys: a multiple-level approach

   • Norberto Asensio
   • Amanda H. Korstjens
   • Filippo Aureli

   Original Paper 14 January 2009 Pages: 649 - 659

   

4. Seasonal decline in reproductive performance varies with colony size in the fairy martin, Petrochelidon ariel

   • Michael J. L. Magrath
   • Peter Santema
   • Naomi E. Langmore

   Original Paper 14 January 2009 Pages: 661 - 672

   

5. Antipredator strategies of house finches: are urban habitats safe spots from predators even when humans are around?

   • Anna Valcarcel
   • Esteban Fernández-Juricic

   Original Paper 17 January 2009 Pages: 673 - 685

   

6. Do stress hormones suppress helper reproduction in the cooperatively breeding red-cockaded woodpecker (Picoides borealis)?

   • A. L. Malueg
   • J. R. Walters
   • I. T. Moore

   Original Paper 14 January 2009 Pages: 687 - 698

   

7. Provenance and threat-sensitive predator avoidance patterns in wild-caught Trinidadian guppies

   • Grant E. Brown
   • Camille J. Macnaughton
   • Jean-Guy J. Godin

   Original Paper 14 January 2009 Pages: 699 - 706

   

8. 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

   

9. Egg coloration in ring-billed gulls (Larus delawarensis): a test of the sexual signaling hypothesis

   • Daniel Hanley
   • Stéphanie M. Doucet

   Original Paper 14 January 2009 Pages: 719 - 729

   

10. Love thy neighbour? Social nesting pattern, host mass and nest size affect ectoparasite intensity in Darwin’s tree finches

    • Sonia Kleindorfer
    • Rachael Y. Dudaniec

    Original Paper 20 January 2009 Pages: 731 - 739

    

11. 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. Caspers
    • Frank C. Schroeder
    • Christian C. Voigt

    Original Paper 28 January 2009 Pages: 741 - 749

    

12. 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

    

13. SOCPROG programs: analysing animal social structures

    • Hal Whitehead

    Methods 16 January 2009 Pages: 765 - 778

    

14. Radio tagging reveals the roles of corpulence, experience and social information in ant decision making

    • Elva J. H. Robinson
    • Thomas O. Richardson
    • Nigel R. Franks

    Erratum 18 February 2009 Pages: 779 - 779