Stuffy Nose?

Hello, my tiel has what appears to be some kind of grey stuff or maybe flaps over her nose holes. She's about 6 years old and very active, I never would have noticed had I not been looking closely as everything else about her currently is normal. Normal eating, drinking and droppings. She does seem a little more quiet lately but that's about it, I can see the feathers on the sides of her mouth moving a bit and wonder if she's actually breathing through her mouth?!

It's a little scary, I'm most likely going to take her to a vet tomorrow but I wanted some opinions.

Thanks in advance.