immature steller's sea eagle in flight

akan mashu national park animal animals avian biodiversity bird prey birds color colors colour colours fauna flight fly flying glide gliding haliaeetus pelagicus hokkaido hover hovering immature japan juvenile natural nature ornithology pacific sea eagle eagles raptor raptors soar soaring species stellers side underside vertebrate vertebrates whiteshouldered wild wildlife wingspan young zoology steller's flight park hokkaido