I'm thinking boy... I see what look like saddle feathers. Not all males get the long tail feathers (or so I've read). Did you say how old and I missed it? The comb is reddish too.... but that could be age.Yeah, he/she acts is always tryinf to peck through the divider. Here is a pic of today.
What do you think? Boy or girl? Sorry about the dirty comb.
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eta: Legs look pretty thick too but nothing to compare it to so that could be me.