A few days ago, Chiclet had dropped some weight suddenly. We didn't quite know at first why she dropped the weight. She had appeared to be eating well. We checked her for dehydration and she wasn't dehydrated. So we thought we would separate her and give her some straight pellet food. For every bite of food she was picking up, she was dropping at least half of the food.
So we concluded since she was in the pen with other horses (the older ones), she would drop her food and they would eat it and so she wasn't getting enough to eat. She is now separated from the other horses when she eats her main meals and she is being given alfalfa leaves and a combination of alfalfa and stable mix grain.
She is now doing sooooo much better.