ZusammenfassungIch habe in diesem Aufsatz kurz anzudeuten versucht, was meiner
Ansicht nach das Wesentliche in Fragestellung und Methode der Ethologie ist und
weshalb wir in Konrad Lorenz den Begründer moderner Ethologie erblicken. Hierbei
habe ich vielleicht das Arbeitsgebiet der Ethologie weiter gefaßt, als unter
Ethologen gebräuchlich ist. Wenn man aber die vielartige Arbeit jener Forscher
über... hiện toàn bộ
AbstractThe “Cultural Transmission Hypothesis” and the “Alerting Others
Hypothesis” of enemy recognition in birds was examined in mobbing experiments
with captive blackbirds. Observer birds learned to mob a novel non‐raptorial
bird more strongly as a consequence of witnessing another bird mob strongly at
the site of presentation. Strength of the observer's enhanced response was
comparable to that ... hiện toàn bộ
T. H. Clutton‐Brock, P. J. Greenwood, Roger Powell
AbstractRecent studies of primates have questioned the importance of dominance
hierarchies in groups living under natural conditions. In a herd of Highland
ponies and one of Highland cattle grazing under free‐range conditions on the
Isle of Rhum (Inner Hebrides) well defined hierarchies were present. The
provision of food produced a marked increase in the frequency of agonistic
interactions but ha... hiện toàn bộ