The one on the left is definitely pretty! I'd give it a few more weeks before deciding. Ours are 14 weeks, I have one buff that everyone says is a cockerel but my sister, who's raised chickens for 40 years says it's a hen.
We have 5 chickens,all supposed to be pullets that are now 14 weeks. These guys are free range, only in the coop at night and when rains. Everything was good up until about a month or so ago, our went from being the friendliest in the flock to the meanest. She's a huge bully and it's affecting...
I'm a new chicken owner, I got 5 chickens that I'm still learning everyday about. I've got alot of questions that I haven't been able to get answered anywhere else.