Hello! My Buff Orpington recently started laying, sometimes every other day. The egg on the left was from her yesterday, and I've just picked up the one on the right from the nesting box. A slight difference in size and color (so far her eggs have been on the small size). Could the egg on the right be from another chicken? I have an ameracuana, an australorpe, silver laced Wyandotte, and black star. So far only my buff and leghorn are laying, any input would be appreciated! Thanks