These white chicks are now a day shy of 7 weeks old (will be 7 weeks on 25/01/2017). I gave them all a close inspection and weighed them. It appears that there are two distinct separate types here: about half of them are slightly thicker set with yellow legs, pure white feathers, and nice thick red combs - these weigh 550 - 600 grams and most resemble Rhode Island Whites; the rest are slighter with thinner, whiter, slightly willow yellowish legs, pure white feathers, and weigh a minuscule... (wait for it) 250 - 300 grams.
They seem to have a purplish white tinge to where their earlobes will grow with smaller, less developed combs - they might resemble Leghorn based layer hybrids.
I have a Rhode Island Red bantam male that is about the same age as these chicks and raised under the same conditions that is keeping neck and neck with the LARGER of these chicks.
I have had no further response from the seller and don't expect to now!
So..... best case scenario: cull most of them and keep one or two of each to see how they turn out! (OR just cull the lot?!)
My curiosity for breeding makes me hope they will turn out to be hybrid layer parent lines, and so form a good option for breeding in the yard. But the truth is I will never be able to fully validate just what they are. And don't forget they are all males.
If some turn out to look like Rhode Island Whites I could cross them to my RIR to create RIW (but you can already get RIW in Australia).
I've got about 50 grower chicks out in the pen right now (I've been too afraid to count them actually - but quite a few). I don't really need some random male white chicks to feed and look after (the feed bill is mounting already and I've got more worthwhile projects on the go).
So people, what do you reckon?