Those look like their combs hage barely developed yet. Yup, eay too young for eggs.
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I've only had them a few weeks not sure of age when I got them but they weren't very old all he said was they weren't ready yetSo you are saying these birds are only about 8 to 9 weeks of age? Or you've had them a month or two, and they are mature (full grown) birds?
As to the rooster, hens do not need a rooster to lay eggs. They lay eggs with or without a rooster. Their eggs simply won't be fertile, ie, won't hatch chicks if a rooster isn't around.
LofMc
You have Dark Cornish pullets that look to be almost to the point of lay, so that is why you are not getting eggs.thank u this page has ben a big help
LofMc