Illustration of an Anthracite brooder stove in an incubator with numerous chicks standing around its base in the early/mid 20th century.

Photograph of a poultry battery brooder - electric multiple brooder housing chicks in a shed in the early/mid 20th century.

Photograph of a poultry brooder in a field in Boghall, [Scotland] in the early/mid 20th century.

Photograph of a broody coop next to a barn in the early/mid 20th century.

Photograph of hens in an intensive system of brooding cages in the early/mid 20th century.