National Recovery Plan for the Christmas Island Hawk-Owl Ninox natalis
Ranging HabitsRanging Habits
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Ranging Habits
The ranging habits of adults in Primary rainforest have been studied by radio-tracking and territory mapping (Hill & Lill 1998a). Male and female pairs ranged within an apparently exclusive territory and two females radio-tracked used a smaller area than the two males tracked. One female of a pair occupied a smaller area that was wholly contained within that used by the male. Both females were preparing breeding at the time of being tracked and presumably range further when not breeding. Pairs defend their territory year round. Territorial boundaries appeared to be sharply delineated and crossings into neighbouring territories appeared to be rare. Territories appeared to be contiguous and were estimated to be 18ha in size on average. There is evidence that territories are contiguous in areas of Marginal rainforest (Hill & Lill 1998a). There are no data on the ranging habits of independent young.