In addition to a dark factor, budgies may also have a degree of dilution. There are four types of dilution: greywing, full-body-color greywing, clearwing, and dilute. Greywing budgies have grey markings on head and wings instead of black, and the body feather color is about 50% diluted (washed out). Full-body-color greywing budgies have the same grey markings of the greywing but the body color is brightened (not lightened or diluted). Clearwing budgies have very light or no markings on head and wings and the body color is brightened (not lightened or diluted). Dilute budgies are washed out all over. The head and wing markings are very light, and the body color is about 80% diluted (washed out). Without any dilution, the budgie looks like the normal budgies seen above.

Basic Genetics:
Normal - dominant
Greywing - recessive, co-dominant with clearwing
Clearwing - recessive, co-dominant with greywing
Dilute - recessive
Details on dilution genetics...

The greywing variety has grey markings on the wings and a 50% diluted body color.

	photo on right of "Nikko" submitted by Catherine
The full-body-color greywing variety has grey markings on the wings and head and a bright body color.

The clearwing variety has very light wing markings and a bright body color.

The dilute variety has washed out markings and also washed out body color.