Missing Chick at the Channel

All four eggs in the Channel nest hatched three days ago and all the chicks were up and running around within minutes of hatching. As of this morning however, one chick is missing. This chick was noticeably smaller than the other three, and had been observed over the last couple of days straying away from the rest of the group on a number of occasions. It is unknown if the chick fell prey to a predator if it failed to thrive due to an underlying phsiological cause. It is likely that it was a bit of both.