WING DISEASE
Wing disease is a trouble of the "elbow." It is caused by a hurt, and the injured bird becomes lame in the wing. Presently a lump forms on the elbow and this increases in size, filling with a yellowish cheesy matter, causing the bird to drag the wing.
The only thing to do is to run camphorated oil on the injured spot, and when the swelling has reached full size cut it open. Usually the bird is not injured as a breeder, but it must make its nest on the floor, as it can not fly. If the disease is noticed at the very start, it sometimes may be cured; but if the trouble is neglected, a crippled bird is the result. For the sake of the appearance of the flock such birds should not be allowed to remain in the loft. If your windows or openings from the loft to the fly are good size there is little danger of this trouble for it is usually caused by the bird striking the wing in its rush to get outside. Birds that are wild or too often disturbed are more liable to this trouble.