I’m surprised she hasn’t cracked open the eggs since the Muscovy eggs are so thick and chicken eggs aren’t .
So am I. lol. My one Muscovy raised a pekin baby... when i had my Pekin flock and they were free ranging one the girls must of laid in the scovies nest, we were shocked when that nest hatched to have a Pekin mixed in.
Never tried chickens though... the best broodies here for that are silkies i have some on Pekin eggs.