Black head and neck, white chinstrap, brown body — the Canada goose is one of the most recognizable birds in North America, and one of the most managed. Continental populations split into 'migratory' birds that still make the long flight from arctic and sub-arctic breeding grounds, and 'resident' birds that breed in the Lower 48 and barely move at all. The split matters because federal regulations treat them differently, and the resident population in particular has grown to the point where many states run early September seasons specifically to thin them.
They're grazers — pastures, athletic fields, golf courses, harvested corn and wheat stubble — and they roost on open water. Decoying birds want to land into the wind, so spread layout and blind placement matter as much as the call.
Canada geese are long-lived, family-oriented, and learn fast. The same field that hammered birds one morning often won't fire the next day if the survivors got educated. Scouting — finding the fresh feed and the day's roost — is the entire game.