I always thought that type 2 yellowface means that the body would be aqua colouring and if it was type 1 wouldnt that mean she would either be cobalt or skyblue? She does not look skyblue to me.

Still looks type 1 to me in the second picture. Sometimes a double factor type 2 looks like a single factor type 1. When you get some chicks the yellow face type may be clearer on them

okay Thankyou Neville

Still looks type 1 to me in the second picture. Sometimes a double factor type 2 looks like a single factor type 1. When you get some chicks the yellow face type may be clearer on them

Neville are you actually seeing skyblue on this bird or the greenish blue we are all seeing ? The reason I ask is it may a be a monitor thing.

Edited December 21, 200816 yr by KAZ

Neville are you actually seeing skyblue on this bird or the greenish blue we are all seeing ? The reason I ask is it may a be a monitor thing.

Yes I am seeing sky blue. It could be a "monitor thing"

okay I will get a new picture in the morning.

Here's a screen shot of the bird next to a normal sky blue

hmmm they are looking the same to me... :rofl:

The colours do look the same, im not sure if its because One of us may have used the flash? I forget if I used the flash for mine.

 

I read theirs a way to tell if you check under the wings? Type 2 means they have yellow under the wings and type 1 means they dont? I will test this theory tomorow.

I see there is a whole lot of confusion about Yellowfaces in general on this forum.

 

Yellowface Mutant I (YF M1) otherwise known as an English Yellowface or Creamface. On this forum seems to be reffered to as YF Type 1.

 

Goldenface (GF) otherwise known as Australian Yellowface. On this forum seems to be reffered to as YF Type 2.

 

Fact Green, Yellowface, Goldenface and Blue are Allelomorphs.

 

A Yellowface is the result of a gene mutation in the Psittacin pigment. In a Blue bird the Gene that codes for the production of this pigment is switched off. When a gene for yellowface is coded for the gene becomes partially activated. The amount of yellow to see will depend on which yellowface mutant is involved.

 

Single Factor YF M1 gives the appearance of a blue bird with a cream/yellow face. Depending on the blue involved as to how much of the yellow is retained in the feathers and therefore remains visable. This will give a slightly sea-green affect on a Sky. Cobalts and Mauve do show a little of the yellow coming through but it does not stand out as much. The grey especially if it is a Light Grey will also show some yellow.

 

Double Factor YF M1 has the visual appearance of any blue or grey bird. Genetically it carries two Yellowface genes.

 

Single Factor GF has the deepest yellow face the intensity of the yellow is more than double that of the YF M1. Sky blues really do look sea/green. Cobalts are aqua/blue Mauve due to the depth of colour seem to get away with it better. Greys are almost grey green in appearance.

 

Double Factor GF has the same depth of colour in the mask but it is restricted more to the face. It does however still "bleed" into the body but it is just not as noticable.

 

Regarding the use of the words "Type" as to Yellowfaces I will quote from the book "Rainbow Budgerigars and constituent varieties" by Ken Gray.

 

For anybody who has this book. Page 19 Paragraph 2

 

Mutant 1 and Mutant 2

These were orignally known as Yellowface Type 1 and Type 2, but as the word 'type' already has other meanings within the Fancy, in order to avoid confusion they later became known as Yellowface Mutant 1 and Mutant 2. This change was first used by Taylor & Warner in their book Genetics for Budgerigar Breeders.

 

Now in his book this reference to Mutant 2 is to the Yellowface originating from Keston Bird Farms. These birds were identical in breeding pattern to our GF. In fact Ken Gray has not been able to deduce that the Mutant 2 and GF are the same and he says further in his book that "It is best, with the extent of present day knowledge on the subject, to regard it as a separate mutation, especially as we know that it comes from australia."

Edited December 21, 200816 yr by RIPbudgies

Interesting reading thanks I'll try to remember to use 'mutant'

I read theirs a way to tell if you check under the wings? Type 2 means they have yellow under the wings and type 1 means they dont? I will test this theory tomorow.

Checking under the wings of this bird won't tell you anything. If a type 2 yellow face has gone green checking for blue or white under the wings will confirm that it is a yellow face blue not a normal green.

Mutant 1 and Mutant 2

These were orignally known as Yellowface Type 1 and Type 2, but as the word 'type' already has other meanings within the Fancy, in order to avoid confusion they later became known as Yellowface Mutant 1 and Mutant 2. This change was first used by Taylor & Warner in their book Genetics for Budgerigar Breeders.

Thanks for this quote. Referring to them as type 1 or type 2 seems to be the most commonly used

Here's a screen shot of the bird next to a normal sky blue

 

Too me I can see yellow bleeding in to the throat area? Maybe my monitor?

Good read RIPbudgie

It's great to see a bird that people can't agree on I like that in a bird... Doesn't fit in any box.

I can also see the yellow bleeding into the throat area.

It's ever so slight up near the check patches. But where in the mutation does it say that I type 1 can't bleed into the throat? Or is that just in the show standard that it says that?

I'm looking at bullets body and That does not look skyblue to me, it is a seafoam green colour. I will have to take another picture today.

Here's a screen shot of the bird next to a normal sky blue

You need a better shot of a skyblue to compare to Neville

 

 

 

There is a "bleed" for want of a better word.

 

It is perfectly correct for this variety. On the show bench it is considered a fault.

 

The fact is the show standard and reality are worlds apart.

So doesn't that bleed make it a YF2/Mutant 2 vs a 1?

If it was type 2 the yellow would show in the wings and tail even if there wasn't any bleed into the body.

 

Incidentally the word "mutant" could be added to the description of any mutation as any bird that doesn't match the wild type is a mutant

Incidentally the word "mutant" could be added to the description of any mutation as any bird that doesn't match the wild type is a mutant

 

Neville that is quite correct. But there has been many uses for the same words within the fancy over the past 100 years and it has created a lot of confusion. It seems the show world just loves to pigeon hole each variety yet when it comes to correct scientific nomenclature which for the Yellowfaces is: (b¹ - b² - b^ayf) they havn't got a clue. So we have to go somewhere inbetween so all peoples can understand. Sometimes the problem is people set in their ways and that information that has been around for 30 years plus just does not get deseminated.

Edited December 22, 200816 yr by RIPbudgies

New pics:

 

 

 

 

This is another skyblue to compare her to:

He would not stop eating so I could only get a photo of his big head in the food dish, you can still see skyblue though.

 

Another skyblue:

Edited December 22, 200816 yr by pearce

Here is two YF skyblues showing no greenish hue to them

 

I guess I will know what type bullet is once her chicks begin the moult.