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| Number of Subspecies: | 16 | Information Source for Taxonomy: | del Hoyo & Collar (2014) Illustrated Checklist of the Birds ot the World, Vol. 1, Non-passerines | Body length: | 60 - 75 cm | Wingspan: | 160 - 188 cm | Weight: | 1,500 - 4,200 kg | IUCN status: | LC (Least Concern) |
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