P.c. hagenbecki (Kobdo pheasant) is not pallasi (manchurian)..In hagenbecki only about 10 % have a cheek patch, much more tail ruff color, term. marks are a "W" not bell shape, crown is olive- bronze, and tend to have a little purple in the tht.
This is the most endangered of the 4 black necks.. You can see they are much pinker and golden, have less breast marking... as I get time will post more of the other subs..