Protecting a mate

A gander will often stand between his mate and potential threats, his head down in a defensive posture. Here a male Czech Goose shows this primitive expression of aggression and will most likely do it when leading any additions to the family too. Make way — the goslings are coming through!
Konrad Lorenz (1903–1989) studied behaviour in ducks and geese, particularly imprinting. Much of his research gave us telling observations on the human condition.
Czech Geese
Czech Geese — Llŷr Davies