Human-induced reductions in species’ ranges have resulted in the geographic separation of some previously sympatric species that interacted historically. Some previously co-occurring species are now being reconnected via translocation. However, interactions between these species can be difficult to predict, particularly in extreme instances where all populations of previously co-occurring species have become completely separated from each other.
Brushtail possums (Trichosurus vulpecula) were offered Japanese quail (Coturnix japonica) eggs and day-old domestic chickens (Gallus gallus) during a captive feeding trial. Differences in feeding sign left by possums of differing sex, age class, and hunger were slight or absent. Possum feeding trial remains were also compared with remains of North Island robin (Petroica australis longipes) and North Island tomtit (Petroica macrocephala toitoi) eggs and chicks preyed on by ship rats (Rattus rattus) at videoed nests.