MICE
Mice are especially fond of bird seed. At night they sometimes enter the room where the bird is kept and eat the seeds which have fallen on the floor. They will often reach the cage by climbing up a curtain or drape. A bird is thus frightened and disturbed at a time when it should be asleep, and as a result it will be drowsy in the daytime, lose its gay spirits, and fail to sing. See that the cage is not hung in a place where mice can reach it.