Characteristics and possiblefunctions of traditional night roosting aggregations in rubyspotdamselflies Switzer, P.V. & Grether, G.F. 401
Effectof androgens on structure and rateof crowing in the Japanese quail (Coturnixjaponica) Beani, L., Briganti, F., Campanella, G., Lupo, C. & Dessì-Fulgheri, F. 417
Contexts and possible functions of alarm callingin the willow tit, Parus montanus; the principle of `bettersafe than sorry' Haftorn, S. 437
Response of great tits to escalatingpatterns of playback Langemann, U., Tavares, J.P., Peake, T.M. & McGregor, P.K. 451
Local dominance and territorial settlement of nonbreedingoystercatchers Heg, D., Ens, B.J., van der Jeugd, H.P. & Bruinzeel, L.W. 473
Frustration-inducedaggression in the domestic hen: the effect of thwarting access tofood and water on aggressive responses and subsequent approachtendencies Haskell, M., Coerse, N.C.A. & Forkman, B. 531
