Hello, I don't make many posts and am new to here but I am making this post to ask for advice. I bought what appears to be pheasant feather for a hat I have and of recent it has developed this translucent form of hole on it and i am just curious as to what it is, I could not find anything on the internet for this. I am not sure if it is just something feathers do or if it is maybe lice? I got it in Austria and spent my summer down in a dry desert region with it. I am not sure if that has anything to do with it. Also some general care tips would be very appreciated. Thank you!!