Blue footed booby in Elizabeth Bay Isabela Island Galapagos. The intensity of the pigmentation of the feet is used by the female to pick the healthiest male for mating.
ID: 736345225
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- 大图:4751 × 3162 像素·40.23 cm × 26.77 cm·300dpi·JPG
- 中图:1000 × 666 像素·35.28 cm × 23.5 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG