A Gathering in the Asture Eugene Joseph Verboeckhoven (1799-1881)

The picture has something of this: mammal, cattle, cow, livestock, bull, farm, landscape, grassland, agriculture, cavalry, people, herd, outdoors, pastoral, desert, animal, horn.
Perhaps it’s a painting of a group of cows standing on a hill next to a body of water with ducks in the foreground.