Sexually Mature Pionus noise?

by Lo

I have a (female?) Bronze Winged Pionus about 3 years old. Recently she(?) has started doing that weird cluck-y wing shake-y call non stop. Literally for hours, and it is maddening. She is not a screamer, biter, is otherwise a lovely bird, but this behavior is driving us crazy. Am I correct that this is sexual maturity? If so, why is she doing it constantly, and how can we get her to stop? Will she ever? Please help us, Thanks.