Hi Pertelotte. I can see differences between my 2 hens and they are both Blackrocks. When I first had them 1, Harriet, immediately put herself in the position of top hen and still ensures she is first to get at treats etc. However when it comes to some things she can only be described as a bit of a wimp!
For example, if it is already dark and they are going up into the hen house she won't actually climb the ladder until the other girl, Henrietta, has started to lead the way. Harriet would also find herself stuck in areas of the garden, away from the run separated by the recent snow and reluctant to find her way back , while Henrietta, didn't get fazed by it.
There are plenty of other instances as well and I have decided that underneath this facade of 'top hen', Harriet is actually quite a timid, nervous bird and Henrietta is more the strong, quiet type (andI also think slightly cleverer). What all this does show is what interesting little characters hens are - something I didn't believe until I was lucky enough to start keeping them.