The Collaborative International Dictionary of English v.0.48:

Birdman \Bird"man\, n.
   A fowler or birdcatcher.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Birdman \Bird"man\, n.
   An aviator; airman. [Colloq.]
   [Webster 1913 Suppl.]