Please tell me I can still trim a wing, my teenage muscovies are flying over a busy highway. They are old enough to fly far, but not old enough to be fat enough to be grounded well. They come back but I don't want them to end up getting killed or annoying the neighbors or getting shot by the hunters.... The #%*& guineas taught them to fly... I know how to trim the feathers on one wing and I've done it before. But I can never remember what time of the year there is blood in that one long wing tip... Did I wait too late????