If it's yellow it's probably a pekin, it's harder to sex at a week though not impossible, I have a difficult time with it, typically you want to sex within the first three days which are the easiest as I've found out. Otherwise you'll have to wait until its older and maybe see a tail curl and...
Hi, I have an Ancona that's almost a year, I'm assuming he's a boy due to the curl in his tail but I'm not 100% sure since his voice never changed. Any suggestions? Is he too old to vent sex?