Kalakotkas
Lituanica 3: 136-138.
Ewins, P. J. 1997: Osprey (Pandion haliaetus) populations in forested areas of North
America: changes, their causes and management recommendations: Journal Raptor Research
31: 138-150.
Forsman, D. 1999: The Raptors of Europe and the Middle East: 77-85 & 21-25. T & AD
Poyser, London.
Gensbol, B. 1984: Birds of Prey of Britain and Europe, North Africa and the Middle East:
Collins, 265-270. London.
Hake, M., Kjellen, N. & Alerstam, T. 2001: Satellite tracking of Swedish Ospreys Pandion
haliaetus: autumn migration routes and orientation: Journal Avion Biology 32: 47-56.
Houston, C. S. & Scott, F. 2001. Power poles assist range expansion of Ospreys in
Saskatchhewan. Blue Jay 59: 182-188.
Helander, B. & Mizera, T. 1997: Pandion haliaetus Osprey. P. Saurola, B Sablevicius.
(toim.). The EBCC Atlas of European Breeding Birds: Their Distribution and Abundance:
176-177. T & AD Poyser, London.
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Lohmus, A