I bought a cockatiel 5 days ago and I love him/her so much . I m not sure if it s a male or female so I named it Coco ❤️ everything is going great I already can snuggle it and a bond is forming . I was wondering if it would start to whistle soon . I play YouTube videos where cockatiels sing and also songs for training. Does it happen that females whistle too ? Thank you all !