I've been wondering... is Rosser significantly bigger than Rain or is it just an illusion? I guess Tracy would know best... watching them on the cam it sure looks like Rosser is bigger.
I think Rosser is a little bit bigger, also they don't look exactly alike. They do have their differences, even their little faces are different from each other. Rosser is a little older and more active than Rain and I think even Tracy has trouble telling them apart without seeing the colored tape on Rosser's band.
You would be right RCF, I'm always second guessing if I can't see them close enough to gauge their relative sizes, particularly now that much of their fluff is gone! Folks should check out RCF's photos and videos for the clues to the individual differences between the chicks! I usually look for more/less, lighter/darker streaking on the breast (Fyfe's breast streaking was finer than Carson's or Cade's) since that is frequently easy to see and look for the patterns of light/dark on their heads - like the differences between Hurricane and Brooklyn, once you know what you are looking for and with some practice, you can get very adept at telling them apart. RCF and Rose have the additional advantage of being able to watch their individual behaviours once they fledge and are out of camera range, but until then, I'm going to check out their head/facial markings - they are both good looking chicks, so I'm always looking at their heads first, could be why I miss the tape colour at times!