Hi. I have just received my hatchery order. I was supposed to receive 5 of each: EE, Buff Rocks, Speckled Sussex, Light Brahmas, Salmon Favorelles. The hatchery included one free exotic and one extra Rock. I know for sure the ten birds that are the brahma/favorelles. I am concerned that the Brahma's look dark grey, I thought light brahma chicks would be more yellow. Anyhow, that leaves 17 birds that I can't tell apart. There are 8 yellow chicks. One has a tiny bit of grey on it's head and 6 seem to have a more dark gold head. I think the dark gold ones are the buff rocks, the one with the grey is either free exotic or EE and the other is a mystery. Then there are few light chipmunk looking ones and a few darker grey/black/brown chipmunk ones. Then there are a few really fluffy ones with dark grey/gold highlights. How can I tell which are the EE and which are the Sussex??? Thanks for any advice.