1. Timekeeping in the honey bee colony: integration of circadian rhythms and division of labor

   • Darrell Moore
   • Jennifer E. Angel
   • Gene E. Robinson

   Original article Pages: 147 - 160

2. Patterns of courtship behavior and ejaculate characteristics in male red-winged blackbirds

   • David F. Westneat
   • Lisa A. McGraw
   • F. Fletcher

   Original article Pages: 161 - 171

3. Reproduction by subordinates in cooperatively breeding Arabian babblers is uncommon but predictable

   • K. J. Lundy
   • P. G. Parker
   • A. Zahavi

   Original article Pages: 173 - 180

4. Paternity and paternal care in the polygynandrous Smith's longspur

   • James V. Briskie
   • Robert Montgomerie
   • Peter T. Boag

   Original article Pages: 181 - 190

5. Division of labor between scouts and recruits: genetic influence and mechanisms

   • Claudia Dreller

   Original article Pages: 191 - 196

6. Discrimination of different social companions in spectacled parrotlets (Forpus conspicillatus): evidence for individual vocal recognition

   • Ralf Wanker
   • Jasmin Apcin
   • Birte Waibel

   Original article Pages: 197 - 202

7. Nestmate recognition in the ant Cataglyphis niger : do queens matter?

   • Sigal Lahav
   • Victoria Soroker
   • Abraham Hefetz

   Original article Pages: 203 - 212

8. Female mate choice of extra-pair males: breeding synchrony is important

   • Bridget J. M. Stutchbury

   Forum Pages: 213 - 215

9. Breeding synchrony and extra-pair mating in birds

   • Patrick J. Weatherhead
   • Stephen M. Yezerinac

   Forum Pages: 217 - 219

10. Breeding synchrony best explains variation in extra-pair mating system among avian species

    • Bridget J. M. Stutchbury

    Forum Pages: 221 - 222