The shepherds were to look in Bethlehem for a baby wrapped in swaddling clothes lying in a manger.
The angel who announced the birth of Jesus to the shepherds was an angel of the Lord.
The angels told the shepherds that a Savior, who is Christ the Lord, had been born in Bethlehem and they could find him wrapped in swaddling clothes and lying in a manger.
The angels just told them that Christ the Lord was born in the city of David, and that the sign to recognize him was: "12. "And for you this is a sign, you shall find a baby, who is wrapped in strips of cloth, and consecrated* in the manger." (Aramaic bible) So if there was something to follow was to follow these instructions or sign.
Yes, it does. See link below.
The angel that appeared to the shepherds in the biblical story of the birth of Jesus is known as the Angel of the Lord.
The angel told the shepherds in the field about the birth of Jesus and where to find him in a manger in Bethlehem.
They found him wrapped in blankets in a manger.
Be sure and check your info with the Bible. The Wise Men were following a star, in order to find Jesus. The shepherds were different.
The question is not clear, Is it the shepherds, wisemen, Peter , you are asking about.
While shepherds watched
The carol While Shepherds Watched: While shepherds watched
 Their flocks by night
 All seated on the ground
 The angel of the Lord came down 
And glory shone around
 And glory shone around
Because the Angel of the Lord told them - in Luke 2 10. And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. 11. For unto you is born this day in the city of David a Saviour, which is Christ the Lord.