Top Knot or NOT?

Since starting to stitch on the partridge, Paulette and I have had several discussions regarding his top-knot.  I've seen lots of Christmas cards drawn by various artists that show partridges with top-knots, but after researching the actual bird I found that the only one with this little appendage is the California Partridge, which is really a quail.

So the big question is....should we keep the top-knot,( which would be an Amadeus stitch), eliminate it, or stitch one of each and call it an option on the stitch guide????? Opinions welcome.