Swan Goose

Thanks for the IDs!

Thanks for making those distinctions, Liam. The African goose's dewlap is new to me. It is a very interesting group of fowl.

Brown African Geese on left and Brown Chinese Goose on right. Both are domestic breeds of Swan Goose.
The ducks with white breasts are Blue Swedish Mallards, a domestic breed.

Chinese geese (and mallards and I don't know about the ones with the white breasts)