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Photo by: J. Schmidt (ssp. subarcticus) | | Additional images here: www.biolib.cz |
| Number of Subspecies: | 15 | Information Source for Taxonomy: | del Hoyo & Collar (2014) Illustrated Checklist of the Birds ot the World, Vol. 1, Non-passerines | Body length: | 46 - 63 cm | Wingspan: | 91 - 151 cm | Weight: | 0,8 - 1,8 kg | IUCN status: | LC (Least Concern) |
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