I have 5 week-old buff sussex babies. Have been trying to get some for 1 1/2 years! VERY excited. Does anyone out there have experience of these? 2 are a bit darker than the others. And of those 2, one is a little bigger already and has a dark stripe on it's head. It also seems a bit feistier than the rest ... More nosey, if you like. I'm thinking the darker ones are boys. Any help would be greatly appreciated!