Last year we had the good fortune of watching the entire birth sequence of a female cria (CBL Inner Harmony Lady).  Here you can see her from when the legs first appeared through delivery of the placenta and being up and around.  Muffet, Harmony's mother, began humming, kicking her belly, and staying alone that morning.  This continued into the afternoon.  It was getting later and later, so we moved her into a smaller pasture near the barn.  Muffet did not like this situation at all, so we returned her to her regular pasture.  She promptly went down to find the tree where she had given birth the 2 previous years and within 30 minutes her water broke and  Harmony's front feet appeared shortly thereafter.  It was a classic and uneventful delivery.  Harmony was making noises as she emerged and got up immediately, nursing within 15 minutes.  The placenta was expelled about an hour later and was about one foot in diameter, pink, blue, and purple (see last photo below).