Hi Barbara,
 BH> My nape is one that sounds like yours. Small frontal patch, small rear
 BH> nape, grayish beak & feet. He's large, 570 gms, or so, also has the 
 BH> burgandy color at the edge/bend/underside of his wing.
 BH> Stoodley's book has been my reference but it is confusing about
 BH> Ochocephala subspecies. They all seem to be lumped together.
In one of the books they are all listed under the Yellow-Crowned Amazons.
This alone makes it confusing and would cover everything i the Amazon family 
with yellow on it's head with the exception of the Mealy.
Hector has no yellow on the nape. His mate, which is obviously a different 
subspecies, has yellow on the forhead and nape. So far they have produced 
only 
one chick out of 7 that has the "burgandy" at the bend. All the other chicks 
have had the red like the female. Hector is larger than Lovely, his mate.
I have one of his offsping, Carmen, set up with a hen, Coco, that has a lot 
of 
the yellow markings. I haven't set them up with a nestbox so there hasn't 
been 
any chicks. 
It is confusing. The only thing that I know for sure is that they aren't 
Double Yellow Heads.
Fran
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