Abstract: A bird feeder is made up of a decorating face plate and a feeding set. The decorating face plate is provided centrally with a through hole. The feeding set is composed of two shells and fastened to the through hole such that the interior of the through hole and the two shells form jointly a receiving space for keeping the feed. The two shells are provided respectively and correspondingly in the lower portion thereof with a feeding port. One of the two shells is furnished with a feed supplying port. The feeding ports of the feeding set are provided respectively with a protective mask fastened thereto. The protective masks are provided respectively in the lower portions thereof with a slot in communication with the receiving space.