I'm not the expert, but one thing I always look for to distinguish is the relative distance between the beak and the eye compared to the distance between the eye and the back of the head. This indicates a COHA to me as the SSHA has the eye more centrally located. Ron

Ron & Pat Dexter
Spokane, Wa.
Email: (Ronpatdexter at msn.com<mailto:Ronpatdexter at msn.com>)