Looks to be a cockerel. 
Tail feather are irrelevant, or often tricky. It's saddle feathers that count and that's only if they're coming in already... Often starting around 12 weeks but some much later.
A natural standing side shot is the best to give clues.

Tail feather are irrelevant, or often tricky. It's saddle feathers that count and that's only if they're coming in already... Often starting around 12 weeks but some much later.
A natural standing side shot is the best to give clues.
