Pupil
Smaller
It can be bigger or smaller, but not equal to.
Both. It is smaller than 4.1 and bigger than 3.9
Dilated pupils are bigger, and constrictred pupils are smaller.
Smaller because the eye is protecting it's self from the light
your eye would explode
The dilator muscle which makes the pupil larger and the constrictor muscle which makes the pupil smaller.
pupil
The same as ours do... light constricts (smaller), darkness dilates (larger) the pupil.
well,in the day it is smaller,and,in the night,it is bigger
Smooth Muscles.
They become bigger and widder
The iris contracts (gets smaller). If this doesnt happen, its a good indication of head trauma/concussion, etc.
its not just parakeets its everyones eyes when light enters the eye the pupil doesnt get bigger its the color around the pupil that gets bigger or smaller the pupil is wut the light goes through. then it reflects againts the back of your eye and that's how you see things
Iris
The muscles that make the pupil smaller or bigger, or the retina, contain pigment, and the color of pigment is based on your genes.