Aussie Finch Forum

How do you determine the sex of the seagreen finch.

Same as normal RFPF. Male is slightly thicker set, more vibrant colour, more extensive head colour with a decent amount of head colour behind the eye, longer more prominent tail "pins", often with a few coloured feathers on the vent (orange in seagreen) when fully coloured & only males trill. If bred from normal phenotype RFPFs, any seagreens are hens (from a split male) as the mutation is sex-linked recessive. Hens are hence more common.

Hmmm, the ones I've got look similar, no colour past the rear of the eyes, both have orange tail feathers but one has more orange (near the vent) & head colour a little different - they're only a couple of months old.
If the buggers sit still for a bit I'll see if I can get a picture

Did you breed them?

No I got them as a "pair".
I've not had any seagreens before & I think I may have 2 hens, apparently both parents are RFPF's producing seagreen young

nicko wrote: ↑08 Jan 2019, 20:53 apparently both parents are RFPF's producing seagreen young

Both parents are 'normal green' ?

Yes Stu I believe so

Split Cock (normal in appearance) X Normal Hen

produce

Split Cocks (n.i.a) + Normal Cocks + Mutant Hens + Normal Hens . .
In all sex-linked mutations . .




Not a recommended pairing because, while the hens are 'definites' (hens cannot be split for a sex-linked trait) . . cocks will need to be test mated (over a period . . unless a mutant hen appears in the first clutch) to prove their genetic make-up

Thanks Arthur, visually trying to decide if I have 2 hens (which I think I have) or a pair, I think I'll wait & see if one exhibits a mating ritual

If they've DEFINITELY come from 2 normal looking parents . .

They are DEFINITELY 2 hens . . 100%

Put a cockbird in with them and you'll see a mating ritual