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About the Author
Jerry Olsen has studied birds of prey for 40 years, in the United States, Canada and Australia, and has more than 130 publications on birds of prey including four books. He is a member of the Institute for Applied Ecology at the University of Canberra. In 2002, Jerry, Susan Trost, Michael Wink and Heidi Sauer-Gurth were the first to describe and name the Little Sumba Hawk-owl Ninox sumbaensis.
Table of Contents
Preface and acknowledgements 1 What is an owl? 2 What is a Ninox? 3 What is a Southern Boobook? Studying owls 4 David Fleay 5 Surveying owls 6 Finding owls 7 Trapping and handling owls8 Telemetry Diet and hunting – medium-sized owls 9 Spotted Owls 10 Boobook summer diet 11 Boobook prey size 12 Northern Hawk-Owls and Long-eared Owls 13 Winter Boobook diet 14 Great Horned Owls and versatility 15 Great Grey Owls and wing formulae 16 Powerful Owl diet 17 Forest owl diets 18 Powerful Owls and dimorphism Breeding 19 Southern Boobook calls 20 Borders 21 Duetting and duelling 22 Weather and calling 23 A lover’s triangle 24 Pre-breeding behaviour 25 Colour plates 26 Nests and breeding habitat 27 Timing of breeding 28 Pair behaviour – incubation 29 Pair behaviour – prey deliveries 30 Fledging age 31 Female desertion 32 Fledgling behaviour 33 Snowy Owls 34 David Lack’s theory of limiting factors 35 Tawny Owls in Kielder Forest 36 Duelling and nest failures Conservation 37 Spotted Owls 38 Athene and Burrowing Owls 39 Little Owls 40 Conserving Australian owls 41 Conservation techniques Wallacea 42 Wallacea 43 Sumba Barn Owls 44 Sumba Boobook 45 New species 46 Eviction