Laserfiche WebLink
<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> d l seolopm ngb entperioid is approximatelytwice as long as thatofr ontilnen• MBOtteKeohavg5`9~s~iad~empa~s <br /> tads. <br /> P <br /> ae es a`dbV arcs etadbbpca nesting birds <br /> scv+ . <br /> o0 from great distances. In <br /> j\j`s pali ge 0%, Ok s ¢nda <br /> b <br /> ch`cks aopolation addition, several cats may hunt <br /> obchep in the same area, exposing birds to threats <br /> from a host of different cats over a short period of <br /> time. In the case of palfla occupying only about 140 km' <br /> (54 mi'), the home range of each male cat represents more than <br /> 10% of this area. Cats are most active at night, when birds have <br /> settled on their nests and are particularly vulnerable. <br /> Diet <br /> Stomach contents from feral cats captured at two sites were <br /> examined in order to characterize the diet of these introduced <br /> predators (Figure 1). Feral cats on Mauna Kea subsist to a great <br /> In order to trackthe movements of feral cats in endangered palilaterri- extent on invertebrates and birds, including both songbirds <br /> tory, cats were trapped and fitted with radio collars before release back <br /> to the wild. <br /> D 1 t 4 5 6 7 a e M Km <br /> their exposure to predators dramatically. In addition, many <br /> Hawaiian birds exhibit little fear of potential predators and often <br /> lack avoidance behaviors. <br /> Telemetry <br /> Radio transmitters were attached to a sample of cats captured <br /> on Mauna Kea in order to describe their home ranges, move- <br /> ments and activity patterns. <br /> On Mauna Kea, some male <br /> cats can range up to 20 <br /> km2 (8 mil) and this rivals <br /> the largest reported home <br /> range for a feral cat from ' <br /> anywhere in the world. In <br /> contrast, the home ranges <br /> of three females averaged The home ranges of a male (orange) and a female (blue) feral cat within <br /> less than 8 km' (3 miz). the critical habitat of the endangered palila Ired lines) on the West <br /> The significance of these Slope of Mauna Kea. The home range of the male was 211 km', and the <br /> large home ranges and daily home range of the female was 6.1 km . Smaller shapes inside the home <br /> movements is that cats ranges are areas that the cats used more intensively. <br />