It means he fancies you or he has got some problem with his eyes.
he might like you
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
The muscles that make the pupil smaller or bigger, or the retina, contain pigment, and the color of pigment is based on your genes.
He is either interested in you or likes you!
the part of the eye that controls the pupil is the iris
He likes you.
it means he really luvs u and cares about u or sadly to say he mite b picturing u in his head
If they are flirting with you, stares you in the eyes when you look at them, also if they look at your lips while licking their lips every now and then.
They change because when the cat is focusing on a specific object the pupil gets bigger to keep focus, when the pupil is a diamond shape that then means that the cat/kitten is not focusing on something particular
Pupil
its called your pupil.
The homophone of "pupil eyes" is "people lies."