Most woodworking content out there is about building, building, building. Much less is said about the simple pleasure of caring for already-built wooden objects. But it is one of my favorite things about wood... the way it ages beautifully with a little care and upkeep.
This is true for all wood, even humble & hard-working plywood. These feeders are put through their paces by our cats. Yet a little cleaning and oiling made them spring right back to life.