Chickens/Roost provides the Refined Iron Chicken mutation, which produces Refined Iron Ingots from Industrialcraft2. This ingot is depreciated in favor of iron plates, and thus serves no value without TechReborn, as does the chicken. This chicken also randomly mutates from Iron Chicken up-breeding, which eats up seeds for no value.
Place two Iron Chickens in a Breeder, breed a few times, get Refined Iron Chicken.
Chickens/Roost provides the Refined Iron Chicken mutation, which produces Refined Iron Ingots from Industrialcraft2. This ingot is depreciated in favor of iron plates, and thus serves no value without TechReborn, as does the chicken. This chicken also randomly mutates from Iron Chicken up-breeding, which eats up seeds for no value.