Lice
Hens to be used in brooding guinea chicks should first be completely freed from lice. This can be done by dusting them with some good lice powder at the time they are set and repeating once a week during the period of incubation. Guineas are less likely to have lice than common fowl, but when they are raised with hens care should be taken to keep them from becoming infested. Examine the young chicks about the head and along the wing bar at the base of the quill feathers, and if lice are found grease these parts lightly with lard. As the guineas grow older they take great delight in dusting themselves and usually are able to keep free from lice.