I am interested to know of any publications that document the number of feathers on a bird's body and/or wings. I realize this will vary from one bird species to the next, and have found general papers on the total number of feathers with no distinction describing the counts from various parts of the body. It appears there should be less variation in the number of feathers on wings, and that is primarily the information that I am interested in knowing. Any helpful publication recommendations would be greatly appreciated!