31/07/2021
Apparently, anyone can be confused of the yellow birds. Any novice may tell that these are all lutinos. Basically, these are classified as green series except the whiteface on the bottom right corner which is one of a blue series.
Lutino is the ino mutation of green. It is a s*x-linked gene. Lutino can never have a blue rump since its gene acts by removing all of the melanin, the dark pigment, from the bird while the pigments of yellow and red are uneffected. However, it can only have a light blue rump as well as a cinnamon color rump when the ino parent has a pallid or a cinnamon gene. Pallid and cinnamon are also a s*x-linked mutations. Cinnamon-ino is also called "Lacewing". The difference of a Pallid to a Pallidino, the latter has a reddish mask than the former. Unlike the pallidino, they have red eyes at birth, which then darken into deep dark brown after a few days.
There are two categories of a pallid, one is of a green series, pallid green also known as "Australian Cinnamon" however that term is confusing since it actually has no cinnamon at all. But the true cinnamon is known as "American Cinnamon". The other category is a pallid of blue series. They are the peachfaced of a blue series. They can be identified having a small band of "peach" over the forehead (Brow area). One of them is a pallid aqua also known as a dutch blue pallid for having a blue rump. The same but with a violet rump is called pallid blue or a pallid turquoise.
The Green dilute is a recessive mutation. It is also known as "American yellow". This is one of the older mutations among the peach face lovebird species. It was first known in the late 60's they were imported by David West and all of the American Yellow's we have today are decedents of those birds. American Yellow reduces the melanin throughout the bird, which results in a yellow bird with a very pale blue rump, which can vary from a slight blue to an almost white rump. Often times they will have dark edging to the feathers, that give a vague sculptured look.
American Yellow is often times mislabeled due to so many names it has been called which included " Golden Cherry", "Cherry Head", "Dilute Edged Yellow", and "Green Pastel" to name a few.
American Yellow is not a very popular mutation, as most people, breeders included are more into the Lutino mutation, due to it being a brighter colored bird. If the American Yellow is combined with the Dutch Blue they are called "Silver", or "American White", they are pale grey in color with the characteristic edging on the feathers, with a slightly blue to grey rump, they have the same face as the Dutch Blue.
Pale Fallow is a recessive mutation. It is still rather rare in the United States. Pale fallow in a yellow form with blue rump is often confused for a Pallid (aka Australian Cinnamon). Since the rump of the Pale Fallow is also blue, though the give away is the eyes of a Pale Fallow as they are red, like a Lutino, also they have white(Clear) flight feathers just like the Lutino. However, if we cannot ascertain or not sure that both parents have fallow genes, it is presumed that the bird is a pallid.
Since both Pale and Bronze are recessive mutations, both parent birds need to have the gene to create any visual offspring, again this can be done with either both parents being visual Fallow, one parent being visual and one being split to Fallow, or both parents being split to Fallow. And since both the Pallid and Lutino are s*x linked, this is another way to tell if your bird is a Fallow.
Note: Except the Opaline Mutation, not all s*x-linked mutations have constant appearance. They will vary once they are bred with other mutations. This picture is just a guide on contrast of almost similar looking yellow mutations.
