Today I noticed that something had been eating the webbing from the feet of my wood duck mount. I found a larva of some kind near one of the feet. I don't see any other damage to that particular mount or any of the others in the room. Anyone have a good suggestion for how to deal with this? I can find another wood duck if needed, but I want to prevent damage to the other birds and deer that are in the same room.

Probably a dermestid beetle - they will wreck havoc on your taxidermy collection. If you can, start by freezing all your mounts to kill them all; if they are on one mount, then they are probably on all of them. While the mounts are in the freezer, fog the room with a bug bomb. I would do semi-annual foggings after that.

If you have a really large collection, there are even some services that can come to your house that focus solely on protecting taxidermy collections.