By the way, the most decent phoenix was in Heroes 3; in Heroes 4, it looked like a burning chick, and it really annoyed me! In Heroes 5, only the wings are annoying, but otherwise, it looks more like a firebird, which is reminded by its long peacock tail ;), it's immediately clear that the game was made by our people.
P.S. The Russian origin of the game is also evidenced by the presence of birch trees on the map.
P.P.S. By the way, when the phoenix flaps its wings, it's almost imperceptible that they are membranous.