Eurasian Collared-Dove (Streptopelia decaocto) found dead in Montana

Photographs from a Eurasian Collared-Dove (Streptopelia decaocto) found dead in Montana, USA (B-D).  (A) Unaffected Mourning Dove (Zenaida macroura) showing normal digits II–IV.  (B) Dorsal surface of feet showing absent distal phalanges on digits II-IV.  Skin covering the distal aspect of digit II on both the left and right (arrow) feet is pale.  (C) Plantar surface of right foot showing absent distal phalanges on digits I-IV and bulbous distal tissue.  (D) Plantar surface of left foot showing absent distal phalanges on digits I-IV and bulbous distal tissue.