Mutation Breeders help

[vettepilot_6]

There is lots of scenarios,did the yellow heads take over the bh's nest,did the rt bh's lay their eggs in the yh's nest and so on.If the yh's had been on their own and produced RTBH young then i would be scratching my head. Cheers Craig

So that would mean the YH hen laid no eggs then?

[TomDeGraaff]

Perhaps at least one of the black-heads had a red tip and a bit of hanky panky has been loose in the aviary

[Craig52]

There is lots of scenarios,did the yellow heads take over the bh's nest,did the rt bh's lay their eggs in the yh's nest and so on.If the yh's had been on their own and produced RTBH young then i would be scratching my head. Cheers Craig

So that would mean the YH hen laid no eggs then?

No,depends who mated with her and the YH cock missed out or was shooting blanks,sperm can be carried for up to two weeks in a hen.

No more ,you are doing my head in Craig

[POLAR GOULDIANS]

The YH hen could not have laid the eggs.

If she is not a YTB then she is effectively a RH behind the Yellow genes.

If a RH or YH female mates with a BH male then all the males produced will be RH/BH and appear RH.

[vettepilot_6]

The YH hen could not have laid the eggs.

If she is not a YTB then she is effectively a RH behind the Yellow genes.

If a RH or YH female mates with a BH male then all the males produced will be RH/BH and appear RH.

She is orange head..male is orange head..there were 2pr bh with rtipped beaks...all young from last season in that aviary are rtipped beak juveniles. ..doesn't make sense?

[Stu]

The YH hen could not have laid the eggs.

the yellow heads take over the bh's nest

Else you have an extra special hen or you have proven Gouldian genetics wrong.
A black head hen produced those eggs if the offspring are BH cocks.



Hmm, So what is the original/first Gouldian head colour?
And where did black heads come from?

[KENTUCKY]

All Black Heads have either a red or yellow tipped beak, the latter is the most misunderstood Gouldian ,because of its sex linked recessive mode of inheritance, yellow tipped beak Gouldians are Yellow Heads in disguise.
Murray labeled Black Heads as Type a Type b and Type c, we know the make up of Type a and Type c by the colour of their beaks,
Type b is the tricky one because, that bird shows no outward signs that it has inherited one gene for Yellow Headedness and there for will also display a red tipped beak, a single gene for Yellow Head will not alter a birds Head colour, Yellow Heads are Autosomal Recessive, that means that two of the same Genes need to be inherited for the Character to be expressed. YH to YH can produce BH Hens and YHs in both sexes, for this to happen, the male parent has to carry the Black Headed Gene as well,with the X-Linked recessive mode of inheritance, Hens cannot be split for BH, that is the nature of the beast, this is the reason that all Hens are always pure and breed true to Head Colour.
I can imagine one of two scenarios why BHs turned up from a clutch incubated by YHs,
either the BH Hen turned into a Coockoo Hen,and the YH Hen never got to lay, or the BHs laid their clutch of eggs and were evicted from their box by the YHs and called it their own.
Which pair changed address?

[finchbreeder]

all young from last season in that aviary are rtipped beak juveniles
OK thats what I was trying to find out with my earlier question.
LML

[vettepilot_6]

The YH hen could not have laid the eggs.

the yellow heads take over the bh's nest

Else you have an extra special hen or you have proven Gouldian genetics wrong.
A black head hen produced those eggs if the offspring are BH cocks.



Hmm, So what is the original/first Gouldian head colour?
And where did black heads come from?

So the YH pair had no eggs then according to genetic forecaster....