By the overall grey shade and big bright yellow spot on their head. Hens are brown, and don't have so large yellow head spots..
GCM is more or less accurately autosexing..
But they are the cutest. We were decided not to keep any cockerels and we will definitely keep Cookie, our GCM rooster.
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I LOVE the GCM roosters!

My golden cuckoo Marans hens are not laying well right now. I only have 6 hens and two are broody, one is molting and the other 3 aren't liking the heat so have slowed down. I do sell eggs when the weather is cool enough to ship and the girls are producing well.
