The fallow cockatiel is also known as the red-eyed silver cockatiel. This is the latest of the cockatiel mutations to have been reported and some see it as being as attractive as the lutino Cockatiel.
The Fallow mutation originated in1971 in the aviary of Mrs. Irma Vowels, so it is a relative new cockatiel mutation.
The fallow cockatiel is light silver. If the feathers of the cinnamon cockatiel and the fallow cockatiel are examined in the hand, little difference, if any, can be made out between them, and yet the difference between these two types of cockatiel is very distinctive.
The cinnamon lutino cockatiel is often confused for the fallow cockatiel. The recessive silver mutation is also often confused for the fallow.
The male fallow is always darker than the female cockatiel, thus making the hen more attractive.
The reduction in Melanin is sufficient to make the eyes appear to be pink like they are in the lutino cockatiel. The fallow cockatiels eyes are slightly lighter in color than the lutino, but they do darken with age. Because in the budgerigar, such pink-eyed cinnamons are called fallows, this might be a better term for them.
The fallow cockatiel, unfortunately, has gone through a lot of inbreeding, and maybe it is this factor that has caused a lot of these birds to be blind or have very defective vision.
Their fertility is also very low, which is why these cockatiels are rare.
In my opinion, I am not sure it is not bordering on cruelty to continue breeding these types of birds for financial gain.