The greylag goose (Anser anser) is the species from which most farmyard geese species have been bred. Alongside the Canada goose it is the most familiar wild (semi-wild?) goose, often being found on town and city park ponds as well as on more remote stretches of water. The British population of this goose is augmented by a winter influx of many tens of thousands more. The "lag" part of the bird's name is of great antiquity and means "goose". Hence that word is technically superfluous when referring to the bird.
photo © T. Boughen Camera: Nikon P900
