Bluebird Box House Shafer Metabolizable energy is 3760 kcal/kg

Metabolizable energy is 3760 kcal/kg (451 kcal per 8oz

including high quality

wheat germ

Extruded particles are “cooked” during the manufacturing process

a versatile formula that provides premium nutrition for all life stages

Bluebird Box House Shafer Metabolizable energy is 3760 kcal/kgMade with insect and rot resistant premium cedarAir vents allow for maximum air ventilation through wall and floor openingsClean out doors provides easy access for cleaning and bird viewingElevated mesh floor aids in management of blowfly; Durable rust free galvanized wire meshPredator guard extends entrance hole to protect against predatorsPredator guard entry hole has a diameter of 1 1 2" Predator guard with an entry hole 1 9 16" in diameter for