![A male and female Canvasback duck face each other in the water, the male looking back with a vibrant red eye.](https://media.audubon.org/aud_apa-2018_canvasback_a1_6121_2_kk_chandler_wiegand_0.jpg?width=233&height=200&auto=webp&quality=10&fit=crop&disable=upscale&enable=upscale&blur=100)
Bird Eyes Come In an Amazing Array of Colors—but Why Is a Mystery
February 07, 2023 —
A recent study analyzing what scientists know about avian eye color finds that there are numerous questions left to solve.