"Are they all plain red or only red in a ring around the seeing part where mine are blue ?" "They are 'red in a ring,' as you say; we call this ring the _iris_, and the 'seeing part' the _pupil_." "Please, what does iris mean?
Iris is the name of one of the lily flowers that grow in the garden." "Iris is a word that means rainbow, which as you know is a belt of beautiful colors, made by the sun shining through rain.

The iris of the eye is a film of color covering the watery inside part of the eyeball, and the pupil is a round hole in the iris that lets the light into the back of the eye.

This opening expands and contracts according to whether the eye needs much or little light.

I tell you this now, but you will need to remember it when we come to the Owls, who have curious ways of keeping too much light from their eyes.
"The iris in birds, as in House People, may be of many different colors--red, as in the Vireo I told you about, and as you now know it is with the Towhee.

Each has a brother with white eyes.