Why do swans have those black markings around their eyes? What could be an evolutionary purpose for them? - Quora
![The Black Swan is Mainly All Black with White Edging on Its Feathers, it Has a Red Eye and Red Beak with a White Stripe Stock Photo - Image of stripe, beauty: The Black Swan is Mainly All Black with White Edging on Its Feathers, it Has a Red Eye and Red Beak with a White Stripe Stock Photo - Image of stripe, beauty:](https://thumbs.dreamstime.com/z/black-swan-mainly-all-white-edging-its-feathers-has-red-eye-beak-stripe-side-view-swimming-lake-259488012.jpg)
The Black Swan is Mainly All Black with White Edging on Its Feathers, it Has a Red Eye and Red Beak with a White Stripe Stock Photo - Image of stripe, beauty:
![Swan Portrait With Glowing Eyes And Beak Stock Photo - Download Image Now - Animal Body Part, Animal Eye, Awe - iStock Swan Portrait With Glowing Eyes And Beak Stock Photo - Download Image Now - Animal Body Part, Animal Eye, Awe - iStock](https://media.istockphoto.com/id/1128852191/photo/swan-portrait-with-glowing-eyes-and-beak.jpg?s=1024x1024&w=is&k=20&c=9SX8cCga1WzlMsqeCZV73kwwAli2BhqRoXWwKO-zHv8=)
Swan Portrait With Glowing Eyes And Beak Stock Photo - Download Image Now - Animal Body Part, Animal Eye, Awe - iStock
![The Black Swan Has A Red Beak With A White Stripe And Red Eyes Its Body Is Black Stock Photo - Download Image Now - iStock The Black Swan Has A Red Beak With A White Stripe And Red Eyes Its Body Is Black Stock Photo - Download Image Now - iStock](https://media.istockphoto.com/id/1458316073/photo/the-black-swan-has-a-red-beak-with-a-white-stripe-and-red-eyes-its-body-is-black.jpg?s=612x612&w=0&k=20&c=JNdJXt8PVMjb516q6dVWYAOdGL47VduaMkYbim_rbQI=)
The Black Swan Has A Red Beak With A White Stripe And Red Eyes Its Body Is Black Stock Photo - Download Image Now - iStock
![Fantasy eye with swan in black and white - Fantasy Eye With Swan In Black And Whit - Sticker | TeePublic Fantasy eye with swan in black and white - Fantasy Eye With Swan In Black And Whit - Sticker | TeePublic](https://res.cloudinary.com/teepublic/image/private/s--H356dsPb--/t_Resized%20Artwork/c_fit,g_north_west,h_1054,w_1054/co_ffffff,e_outline:53/co_ffffff,e_outline:inner_fill:53/co_bbbbbb,e_outline:3:1000/c_mpad,g_center,h_1260,w_1260/b_rgb:eeeeee/c_limit,f_auto,h_630,q_auto:good:420,w_630/v1620281834/production/designs/21634084_0.jpg)
Fantasy eye with swan in black and white - Fantasy Eye With Swan In Black And Whit - Sticker | TeePublic
![Green Water And A White Swan With An Orange Bill And A Black Eye. Stock Photo, Picture And Royalty Free Image. Image 141893514. Green Water And A White Swan With An Orange Bill And A Black Eye. Stock Photo, Picture And Royalty Free Image. Image 141893514.](https://previews.123rf.com/images/nikolaihamel/nikolaihamel2003/nikolaihamel200300031/141893514-green-water-and-a-white-swan-with-an-orange-bill-and-a-black-eye.jpg)
Green Water And A White Swan With An Orange Bill And A Black Eye. Stock Photo, Picture And Royalty Free Image. Image 141893514.
![I'd never seen a black swan till I went to London the other day! He had red eyes to match his beak... : r/Ornithology I'd never seen a black swan till I went to London the other day! He had red eyes to match his beak... : r/Ornithology](https://preview.redd.it/hbn14jpvlxt01.jpg?width=640&crop=smart&auto=webp&s=de20f665baad9dff48a6708add3b2bf68fe559ce)