I owned a Cockatiel several years ago and we lovedddddddddd him!!! I lived with my roommate and she and I treated him like a puppy, since we weren't allowed to have dogs in our apartment.
His name was Bombay and he was the cutest funniest little bird! We kept him out of his cage while we were home and he would go back and climb to the top of his cage to potty and then climb back down. When we had music playing, he would dance. LOL!! Whenever we were in the bathroom,getting ready, he would come walking in there, the whole time saying, "Come here!". He would then fly to our leg, grab ahold of our clothing and climb to our shoulder so he could watch us get ready. He would also lay against my roommate's boyfriend....against his chest, like a dog. Whenever we were trying to study and were sitting on the floor, he would actually run over, hook his beak under the cap to our pens and take off running with it because he wanted us to stop and give him attention. He also said several things...."Come here!", "Popcorn" (one of his favorite snacks), "Bombay", "Pretty boy", "I love you"....along with different whistles (his favorites were the wolf and the whiperwill.) Anyway, sorry so long...I am just having some flashbacks of my cute Bombay.
Tammy