strange behaviour

Our cockatiel Yuki does this adorable thing me and my gf like to call the "goblin" where she will hang like this on the rails of the cage. She used to do this on the inside of the cage but since we got our little grey boi Rio (in the background :D) she started doing it on the outside. She...

Hello All, I have a yellow cockatiel that keeps opening his mouth. His name is Tintin. This behavior can last all day, and some times it disappears and return. He has been doing this almost for two months. This youtube video shows this behavior: I have already taken him to 3 vets. One made...