hallo I have a one year old Hyprid female macaw , the new feathers r growing wierdly. 1 the feathersheet it doesn't fall off on the last 1/3 (from gowring area) and it's very thick. 2 a black material is stuffing the feathers from underneath. 3 this part of the feather unter the sheet is very pale and has bad colouring in comparison to the rest of the feather. 4 she started breaking and chewing on the tail feathers, I guess she is annoyed because of the reasons I mentioned above. PBFD: negativ Any idea. ( pics included) This pic was pulled during the examination. (To explain the blood stain). Any idea? Help please.