Our female budgie (two years old) sometimes has a 'cough' or what sounds a bit like hicups. She appears well in every other way, apart from a crusty appearance on the cere, the coloured bit above her beak were the nostrils are. Could this be connected? I have heard that mites can cause this, but she doesn't seem to have any trouble in that area. I plan to ask the vet about this soon, but wandered if anyone had any clues? Thanks.