Red-crowned cranes in blustery conditions at KushiroPhotograph: Kimimasa Mayama/EPAThe red-crowned cranes, also called Japanese cranes, sleep in their winter roost on a river in the morningPhotograph: Kimimasa Mayama/EPAA red-crowned crane (right) intrudes on a group of whooper swans at KushiroPhotograph: Kimimasa Mayama/EPA
A fully grown Steller's sea eagle, left, fights with a youngster on a frozen lake in NemuroPhotograph: Kimimasa Mayama/EPAA Steller's sea eagle perches on a branch during sunset at BekkaiPhotograph: Kimimasa Mayama/EPAA red-crowned crane fights a white-tailed eagle for food in KushiroPhotograph: Kimimasa Mayama/EPACranes fly downriver from their winter roostPhotograph: Kimimasa Mayama/EPATwo opponents 'sing' at each other before a fightPhotograph: Kimimasa Mayama/EPAA northern red fox carries a living dace past a crowd of cranesPhotograph: Kimimasa Mayama/EPAA long-exposure picture shows Japanese cranes sleeping in their winter roost on a river lit by a nearly full moonPhotograph: Kimimasa Mayama/EPASteller's sea eagles (middle) and white-tailed eagles (bottom) stand on a frozen lake as Ezo (or Hokkaidō) deer cross a lake in NemuroPhotograph: Kimimasa Mayama/EPA
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