Things didn't go quite to plan. After putting the little turk in with the bourkes I was surprised to find her own eggs hatching the other day (I must get new batteries for my egg candler). The worry was that she wouldn't feed her own newly hatched chicks having come attached to the much bigger turquoisine. So I've now moved the new bourkes chick and eggs to my other pair of bourkes, whose own eggs look like they have failed. A second egg has now hatched and both chicks are being fed.
The adopted turk chick (I'm not sure it's developing properly)
The other 7 chicks are OK (although there is still a big difference in size)
bengalese eggs should be hatching soon
My other pair of turks chicks all fledged OK
Two cinnamon hens, a normal hen and oplaine
The normal has perfect feathers