Well I actually still guess a hen, my cochin girls have big old combs on them and I have been convinced their boys, but then...out pops an egg! But really because it's more yellow than red I guess a pullet. And the she chickens have wattles to! Here I'll go get a pic of one of my girl cochins, It's a bit blurry, chicken photography is not a talent of mine but as you can see, especially cochins in my opinion have major wattles and combs!