This seems to be a thing that cockatiels as a species like to do, since every cockatiel I've owned or met has had a thing for feet and shoes.
What you're seeing is courtship behavior. The bird (typically males do this) views the foot/shoe as a potential object of romantic interest and may whistle at it the same way he whistles at favorite toys or mirrors.
It's basically harmless, although you may want to make sure the bird doesn't start chewing on your shoes. I had to start tucking the laces inside my sneakers or the plastic tips would get chewed off.
a pretty girl is like a melody
fish
My answer is that they would sing like you would sing in a song
It's very difficult to visually determine the sex of a cockatiel, although experienced bird owners can usually tell. It's very easy to determine by studying the behavior of the bird. When a female wants to mate, she will lower her head and swish her tail back and forth. A male will actually masturbate - on your hand, on a corner of a toy in his cage, or even on the corner of his food bowl. When he is done, he may sing very loudly at the top of his lungs for a few minutes. He will also ejaculate. Males are also more vocal than females, they sing more, and many of them can talk a little. My male cockatiel, Sam, has a vocabulary of about 20 words at times.
Mumble
1959
a day well what you need to do is get a sock and long pants on then after put your bird on your fooy and walk with it and after it should cimb your leg good sign it likes you!! But one thing is sure if you love your bird then get it a girlfriend or a boyfriend but your bird won't pay attention to you but your othe on will but uoy need to do the following above then im sure they will like you!! But be careful the first day put eachvone in a diffrent cage if not your new bied will get raped
it names Mumble
Sing's shoes represent a new beginning as a successful soccer player and the romantic interest in Mui (Vicki Zhao) .
in the theatre
I have a pet cockatiel, and after a week she won't shut up. She doesn't really sing, but whistles alot. If you whistle the same thing over, she'll learn how to say it. I taught her the wolf whistle, it's really funny! Male cockatiels are more vocal, though.
love me tender love me true blue suede shoes devil in disguise