The Adoration of the Shepherds, in the Nativity of Jesus in art, is a scene in which shepherds are near witnesses to the birth of Jesus in Bethlehem, arriving soon after the actual birth. It is often combined in art with the Adoration of the Magi, in which case it is typically just referred to by the latter title.
The scene is very commonly combined with the Adoration of the Magi, which makes for a balanced composition, as the two groups often occupy opposite sides of the image space around the central figures, and represent the theological interpretation of the episode where the two groups, Jewish and gentile, represented the peoples of the world between them. This combination is first found in the 6th century Monza ampullae made in Byzantine Palaestina Prima. Wiki