My girls just started laying (9/20/9). Out of the 4 buff orphingtons I am getting one egg per day. I am getting 2 distinctly different sized eggs (some are very large and some are more modest). Three of the first 7 eggs were also double yolked. All the eggs have been in the same nest box (2 boxes for the 4 girls) I am guessing maybe only 2 of my girls are laying ?? What are reasonable expectations for newly laying birds?