I was at this plant store and thery had two cockatiels there, they bite and hiss just liek cheeko. Anywho they were so cool, they were grey, one of them could even TALK!! it kept on saying "pritty bird, pritty bird" lol I thought it sounded sooooo funny . the other one would bite the bars of the cage and let ppl scratch his neck, hee hee !! I love birdies