My budgie Skeeter, who I recently acquired and am hand-training, makes an unusual sound -- I have not heard it before with prior birds. It is an unthroated sound that sounds like he is saying: "tsk tsk" several times in succession, often accompanied with head craning and bobbing. He doesn't seem depressed or angry, so I wondered whether others may have noticed something similar and what it might mean. Thank you.
One of our budgies, Ivy, does that - especially first thing in the morning. We were a little concerned at first too - but now her buddy Otto has started doing it too. They're both going through their first moult so we thought it might be something to do with blowing feather dust out of their nostrils. They're happy, busy, funny little budgies in every other way