Hi Jade and others,
In earlier days I kept parrots. When I visited
other aviaries sometimes I saw birds with few yellow feathers on their body
(these feathers could be anywhere). The reason for these loose yellow feathers
is often that the bird had or has an illness on its liver. When the yellow
feathers are replacing, say all green parts of, for example Scarlet-chested
Parrot, we have a mutant. In parrot-keeping this is normal these days and it's
an aim to select these mutants out and to keep the color in further breeds.
People often pay a lot of money for new colors in parakeets. It's even possible
to breed new colors. A friend of mine had yellow Lineolated Parakeets and also
blue-ones, he crossed these two and after crossing the youngsters herefrom again
he was the first to breed a albino (cream-ino) of this species!
Well we are a bit off track...my guess for the few
yellow feathers is indeed due to liver illness...
If there are any comments, please send them
Keep on birding