Big male mute swan. The mute swan is one of the heaviest flying birds. It's wholly white in plumage with an orange bill bordered with black. It is recognizable by its pronounced knob atop the bill.
ID: 241114465![复制](//static.hellorf.com/hellorf/_next/images/copy.svg)
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- 大图:3902 × 3068 像素·33.04 cm × 25.98 cm·300dpi·JPG
- 中图:1000 × 786 像素·35.28 cm × 27.73 cm·72dpi·JPG
- 小图:500 × 393 像素·17.64 cm × 13.86 cm·72dpi·JPG