Originally Posted by TaraBearaIsBack
I don't consider blood bays that get light noses in the winter browns at all. They are definitely bay and I would know.. I have a gelding that is dark brown/bay and his nose depending on the time can get lighter but my other bays that are red brown still get light noses.
Ok, I get this. They have brown bodies and black points, ergo they must be bay. I get that all your life you have been told this. However, science has passed the point where we just have to blindly believe that. The gene that causes brown as opposed to bay has been isolated. It does exist. It is a mutation of the bay gene, so still restricts black to the points of the horse. The visible difference is that a bay horse stays an even colour all year round - a brown horse will usually have a change of colour from season to season, and the colouring does not stay even, instead the "soft" parts of the horse are paler (muzzle, elbow, flank etc.).