Our first orphaned infant white-footed mice arrived today. Weighing about 10 grams they are nearly ready to open their eyes (one has an eye almost all the way open). They will need several feedings of formula and constant care until they are able to eat on their own.
You can see in the photo that one has a green mark on its ear. This is a small dot of nail polish that we use to tell help us identify orphans. Identifying individual patients is important for monitoring their development and health. Given the size and health of these mice they should do very well and be able to be released back into the wild in no time.