Our white leghorns have been laying good for 7 months now with 1/day. Yesterday we were 1 egg short, but didn't think much about it. Today we had 1 egg from each, but one is very small, about 1/3 normal size. Shell seems good, but the shape is rounder than usual. They all seem to eat good with added calcium on the feed daily. Is this a fluke or could we be seeing a real problem? I have a photo but not downloaded yet if that would help. Thanks.