1. Food availability and immune capacity in serin (Serinus serinus) nestlings

   • Maria Hoi-Leitner
   • Marilo Romero-Pujante
   • A. Pavlova

   Original Article Pages: 333 - 339

2. The importance of nestling location for obtaining food in open cup-nests

   • Roni Ostreiher

   Original Article Pages: 340 - 347

3. Costs of trail construction and maintenance in the leaf-cutting ant Atta columbica

   • Jerome J. Howard

   Original Article Pages: 348 - 356

4. Nestling sex ratio variation in the cooperatively breeding acorn woodpecker (Melanerpes formicivorus)

   • Walter D. Koenig
   • Mark T. Stanback
   • Femmie Kraaijeveld-Smit

   Original Article Pages: 357 - 365

5. Intranest relatedness and nestmate recognition in the meadow ant Formica pratensis (R.)

   • C.W.W. Pirk
   • P. Neumann
   • P. Pamilo

   Original Article Pages: 366 - 374

6. Sociogenetic responses to ecological variation in the ant Myrmica punctiventris are context dependent

   • Christopher J. DeHeer
   • Vicki L. Backus
   • Joan M. Herbers

   Original Article Pages: 375 - 386

7. Task partitioning, division of labour and nest compartmentalisation collectively isolate hazardous waste in the leafcutting ant Atta cephalotes

   • Adam G. Hart
   • Francis L.W. Ratnieks

   Original Article Pages: 387 - 392

8. Clock-shift experiments with homing pigeons: a compromise between solar and magnetic information?

   • Roswitha Wiltschko
   • Wolfgang Wiltschko

   Original Article Pages: 393 - 400

9. Cuticular hydrocarbons and reproductive status in the social wasp Polistes dominulus

   • Matthew F. Sledge
   • Francesca Boscaro
   • Stefano Turillazzi

   Original Article Pages: 401 - 409

10. Ectomised conductors in the golden orb-web spider, Nephila plumipes (Araneoidea): a male adaptation to sexual conflict?

    • Jutta M. Schneider
    • Melissa L. Thomas
    • Mark A. Elgar

    Original Article Pages: 410 - 415

11. Nest-site selection in honey bees: how well do swarms implement the "best-of-N" decision rule?

    • Thomas D. Seeley
    • Susannah C. Buhrman

    Original Article Pages: 416 - 427