I do not speak English well so please be patient with me. I have a serious problem every time I do a bird mount. Even when I wash the feathers and dry them with cold air they do not look spongy and natural, they look dirty and stick toghther. I have read that it is not good to wash the feathers of birds that are not aquatic, is that true? I do not know if there is any way to solve this problem also in birds that I have already mounted, perhaps cleaning them with some solvent or washing them with water and soap even if they are already finished? I also have other questions: how do you prevent the small feathers on the head from falling off? How do you achieve a natural posture of the wings? I have practiced with small birds and none has been a good result.