Calendar: March (Peasants at Work on a Feudal Estate) , by limbourg brothers , 1416 , illustration , International Gothic style , from the series Très Riches Heures du Duc de Berry , countryside, fields and plains, oxen, Estate, Farmworker
A painting of a man plowing a field with a bull.
This is an illustration of a medieval castle.  A man is plowing a field with two oxen.  The oxen are brown and black.  People are working in the field.  There is a sun in the sky.  Around the castle is a circle with numbers and symbols.