I'm new here as well, tho my CAG Gordon is 3.5yo. He says a whole menagerie of words, phrases, sounds, beeps, etc. I give him "assignments" if you will to work on when I am not at home. This gives hi the mental stimulation that greys need so very much. So, for instance I tell Gordon "Practice, be good, Practice" That way he knows that when i say practice that its a new assignment. he will practice the be good part and try until he has it right. He even tells himself to practice when he doesnt have it quite right. I sing very often to my birds. Gordon sings back. ITs very cute.