My female cockatiel singing again

Here is my cockatiel hen "Graue" doing her best at singing again. She always does this when she is sleepy.

While it's rare for female cockatiels to sing, it's obviously not unheard of!

00:00 Singing
00:30 More Singing
00:45 Even more singing

Видео My female cockatiel singing again канала Addicted To Cheeks