Chrono-ethologic investigations on the Queensland koala (Phascolarctos cinereus adustus) in captivity

Abstract 10.1002/zoo.20093.abs The chronologic behavior pattern of a separately kept pair of koalas at the Tiergarten Schönbrunn (Vienna Zoo) was investigated with regard to how the patterns are distributed over 24 hr and the “zeitgeber” (from German; synonym “entraining agent”) on which they depend. The data was collected continuously by means of infrared video recording over […]

Findings from a feeding study of the koala (Phascolarctos cinereus adustus) at the San Francisco Zoo

Abstract 10.1002/zoo.1430110608.abs The feeding behavior of four captive adult koalas was investigated at the San Francisco Zoo. This study examined the correlations between koala preference for selected Eucalyptus species and the nutritional and chemical components of those species. The total grams of Eucalyptus leaves consumed daily per animal were not significantly different, averaging 400 grams. […]

Female koalas prefer bellows in which lower formants indicate larger males

Despite an extensive literature on the role of acoustic cues in mate choice little is known about the specific vocal traits that female mammals prefer. We used resynthesis techniques and playback experiments to examine the behavioural responses of oestrous female koalas, Phascolarctos cinereus, to male bellows in which a specific acoustic cue to body size, […]