Lorenz studied imprinting in animals. In Lorenz's First method, he evenly divided goose eggs. Half of the eggs hatched with the mother naturally and half hatched in an incubator and Lorenz was the first thing that they saw when they hatched. When hatched, the incubator geese followed Lorenz and the natural geese followed their mother. In his second method, Lorenz mixed up groups of hatchlings: the incubator group still followed Lorenz.