It's hard to say for certain without seeing it's ears, but I believe you actually have a Gold Campine, not a Buttercup.
If it was a Buttercup, it would have a cup shaped comb (hence the name). Unfortunately Campines are 'hen-feathered', which means roos won't develop the tell-tale hackles and saddle feathers. This complicates gender ID.
Judging by stance and comb alone, I'd say you have a male.