I'd bet that was a really late hatched bird from 2017 that hadn't quite finished moulting the last couple feathers in his fan.

The first bird I killed this year had a shorter beard, slightly longer spurs, but a full fan.  Tiny body around 15lbs. He was also probably a late hatch from 2017.

I don't think a bird hatched in 2018 could have grown that long of a beard by this year.  He would have hatched in late March or early April.  Not impossible, but very unlikely.

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