The Collaborative International Dictionary of English v.0.48:

Sheldafle \Sheld"a*fle\, Sheldaple \Sheld"a*ple\, n. [Perhaps
   for sheld dapple. Cf. Sheldrake.] (Zool.)
   A chaffinch. [Written also sheldapple, and shellapple.]
   [1913 Webster]