Forebrain size and innovationrate in European birds: feeding,nesting and confounding variables Nicolakakis, N. & Lefebvre,L. 1415
Female mate preference and reproductive isolationin populations of the striped mouse Rhabdomyspumilio Pillay, N. 1431
Burrowing by common voles(Microtus arvalis) in varioussocial environments Dobly, A. & Rozenfeld, F.M. 1443
The pivotalrole of rank in grooming and support behavior in a captive group ofbonobos (Pan paniscus) Vervaecke, H., de Vries, H. &Van Elsacker, L. 1463
Effectsof frequency and length of separation bouts between mother andoffspring on later explorative behaviour of young guinea-pigs(Cavia aperea f. porcellus) Albers, P.C.H., Timmermans, P.J.A.& Vossen, J.M.H. 1487
Does testosteroneaffect the trade-off betweeninvestment in sexual/territorialbehaviour and parental care in male greattits? Van Duyse, E., Pinxten, R. & Eens, M. 1503
The distribution of grooming among femaleprimates: testing hypotheses with theShannon-Wiener diversityindex Di Bitetti, M.S. 1517
Dominance hierarchies in female mountaingoats: stability, aggressiveness and determinants ofrank Côté, S.D. 1541
