gouldian sex Id

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Tiaris
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No, the SFYB cock mated to the RH hen will produce yellow-backed hens & green backed cocks.
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Alistair

I'm a little late with an observation but if the red headed hen was a Single factor YB as suggested it would be a visual yellow, because it's white fronted.

They just look like two recesive WF/G Backs to me, if you mate them to normal cocks you wil get all PB/G Backs split for white front.

Alistair.
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Tiaris
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It was the RH cock which was suggested to be SFYB, not the hen.
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