When I model furry, fuzzy or feather-covered critters, I always look for places to present hard edges or closely modeled detail. Typically this is in the head area, the nose, the beak, feet or the bony break of the wrist in a bird's wing.
Left: detail - Golden Morning
Right: detail - clay model of pheasant still-life
See Blogs #134, 135, 136: January 2012