Same here. None of mine seem to object to a mix of colour, shapes and sizes of eggs under them. This for example was the clutch as set for Fez last year (all hatched) when I switched out the golfballs she had been sitting on beforeVery true. I bought fertilised eggs from very different bantam breeds and my broody hens don’t mind the difference in the egg size or color. And cares for them just as well as her own chicks.