The Activation of an Instinct Caused By a "Transitional Action"

Abstract

THE ACTIVATION OF AN INSTINCT CAUSED BY A "TRANSITIONAL ACTION" by HANS LIND1) (Naturfredningsraadets Reservatudvalg, Denmark. Communication no. 58) (With 3 Figures). (Rec.I-III-1958) During behaviour studies on different birds in the last three years I often noticed that a bird might change from one action to another at a time when one would not expect any change in behaviour. In many cases the bird was not in any thwarted situation or in a conflict for which reason the "new" activity could not be a simple displacement. It was characteristic that there was a gradual transition between the two activities through