She’s adorable! Did she show any of the cuckoo pattern when she was a chick? Mine seemed to have more when she was younger. I’ve seen other Blue Cuckoo Marans on here that have very little cuckoo speckling, similar to yours. My normal Cuckoo Marans is certainly much more cuckoo than my blue is.
Females can still have some barring/cuckoo pattern, it’s just hard to see. Here’s a picture of my Blue Cuckoo Marans, you can see she has barred leg feathers and some speckles on various other areas. I have seen a few on the forums that don’t seem cuckoo at all though, so solid blue also seems...
As far as I’m aware, breeds that can be autosexing have to be bred specifically for this trait. When I ordered a Blue Cuckoo Marans from a hatchery, they told me that their Blue Cuckoo Marans are vent sexed rather than sexed by chick down. They mentioned sometimes the head spots of barred...