HELP!! i offered my 7 months old cockatiel, luka some millet grass that i had grown and he nibbled on a little, after sometime he bobbed his head a little and then shaked his head with millet seeds coming out barely digested (that is his main food im trying to change)i became alert then he did it again but he bobbed it harder this time with more food coming out he is also breathing a bit fast but he was flying fast before so he is breathing fast!what is he doing?! please tell me what to do as vets here suck with birds.