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| | Table of Contents : Volume 19 - 2 |
 | | Most northern hemisphere owls rely on small to medium sized terrestrial mammals for their food supply and, fortunately for the owls, most of these mammals, including microtine rodents, shrews and mice have adapted very well to habitats that have been highly modified by humans. |
 | | A prohibitively large field programme, involving the monitoring of individually recognisable owls, would be required to obtain an improved estimate of adult survival; and so further use of population viability analysis, to assess the adequacy of particular management strategies, is unlikely to be used for the species. |
 | | Several Norfolk Island owls had been collected for museums in the early 1900s and, by referring to them and the measurement of the remaining living individual, we decided it was a large bird and, therefore, probably a female. |
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