BUFF CUCKOO (provisional standard) known as Lemon Cuckoo in the UK

the OZ colour is genetically correct to Buff and Cuckoo with the original development using 
pure Buff and pure Cuckoo Orpingtons in the development 

in Australia we refer to it in its genetically correct form

# update - as of 2022 (decades after its development in the breed) this colour is still not recognised in the APS* for Orpingtons - it is not in the APS*

* Australian Poultry Standard


the Buff Cuckoo pattern is most often
Buff and White barring
but Buff with Grey barring is starting to be seen

both sexes to be similar in shade 
the feathers in all sections crossed their entire length by irregular Buff and White or Buff and Grey bars, 
the tip of each feather must be Buff
the shaft of the feather to be a shade of Buff for the entire length
male neck and saddle hackles display as a lusterous brighter Buff Cuckoo than the female counterpart
the tail feathers in some birds display a darker Buff in the Cuckoo pattern that can shade to a deep almost brownish Buff = points to be deducted for this

there is to be no black or blue in the underbase =
(when you look at the under feathers you should not see black or blue tinges/highlights)
the underbase must be Buff and White Cuckoo or Buff and Grey Cuckoo 

overall the Buff component of the pattern needs to conform as closely as possible to the Buff

Excellence to be determined by the distinct contrasts with an overall blending of the sections.

Eyes, Comb, Face, Wattles and Earlobes - red
Beak, Skin, Shanks, Feet, Toenails - white

Type (body shape overall) MUST conform to the Orpington Standard
if the bird exhibits traits not corresponding closely with the Orpington Type/Standard it should be considered
​not a good Orpington