I came across an interesting resource. Deer are said to be color blind, which isn't 100% accurate. There is research out there you can read up on if interested. However, this link takes that information a step further and allows you to experience what they see. You can upload a picture and then click on "Red-Blind/Protanopia". It will then edit the image to give you an idea of what deer see. Take a look if you're interested: http://www.color-blindness.com/coblis-color-blindness-simulator/ Throw in their ability to better see UV light and motion better than humans and their eyesight is better than most think.