Predator odors often repel prey species. In the present experiments, we investigated whether changes in the diet of a predator, the coyote (Canis latrans) would affect the repellency of its urine. Furthermore, because predator odors have a high sulfur content, reflecting large amounts of meat in the diet, we investigated the contribution of sulfurous odors […]
Jumped in ground floor window of animal room – took several student half an hour to catch it (a tribute to its agility and sagacity) and put in rat cage. It opened cage in night and escaped.
Response to Kirk 1921, asserting weasels dont eat shrews. Lists 3 observations of shrews identified in ermine or longtails, even if only as a last resort.
Total of 50 weasels and 12 stoats eartagged, released, some have been recaptured 50 times on 80 acres (32 ha). Main aim is to find out how the combined predator force of weasels stoats and short-eared owls affect the numbers of Microtus. Propoertion of monthly losses attributed to predation is tabulated – was the most […]
Most hypotheses attempting to explain the evolution of pronounced sexual dimorphism in body size in the three species of weasels (Mustela erminea, M. frenata, M. nivalis) assume that sexual dimorphism is a long-term adaptation, associated with the different reproductive strategies of the two sexes. We here examine an auxiliary hypothesis which predicts that the degree […]