Squeaking sound when flying

[jmlw7]

Does anyone have any IRN's who sound like something on them or in them is squeaking when they fly? Remy is starting to sound like a city pigeon flying. Is it lack of protein? She hasnt been eating much protein lately and she definitely isnt making that sound the way she usually chirps or squawks.. but it is a faint squeak every time she flies. Not sure if this is normal or if we should be concerned?

[InTheAir]

I'm not sure if this is the same, Nila had a quite small feather on the very front of his wing sitting on a weird angle once and he sounded like a pigeon flying until he fixed it. It had got over the feather it was meant to be under somehow.