Gorgeous Blue partridge cockerel?

[MaryZoe]

This is more of a color question than a breed. He is a mix of blue Birchen Marans and something—maybe buff Orpington? Not sure. But I do love his color. Is it considered blue partridge, or just super leaky blue Birchen? Could he be a pure Blue Birchen Marans with really bad leakage?

 

[oldhenlikesdogs]

Blue partridge had gold hackles I believe. I'd just call him a mixed color, but I'm no expert.