My African Grey Tui is 18 months old and has a pretty good vocab. More impressive for me is her understanding of what she says. I recorded a morning conversation of us chatting before we had a shower and started the day. Tui's vocab is much larger than what is here, and she is learning new words (thank you & Your Welcome) and while she does not clearly say them, she uses them correctly. She also started screeching and has learnt to self correct this by telling herself to be quiet. Anyhow, for a 18 month old anything I am pretty impressed with her comprehendsion
