Birds

🔻Tetrachromats: four types of cone cells let them see red, green, blue, and ultraviolet together

🔻Eagles & other birds of prey can see 4 to 5 times farther than the average human can

- They have 20/5 or 20/4 vision

🔻Can see colors more vivid than humans

- Identify more shades

- Can see ultraviolet light

🔻340 degree visual field