The feather was dropped by a crow. The owning species of the eggshell is a bit more complicated. I am guessing ring-necked dove. I had no glossy black paint, but since I did have about half of a gallon of eggshell white paint, I am painting the box white. Normally, I prefer to use one coat of spirits of turpentine to open up the grain and then two coats of polyurethane, but because I was using surplus (=scrap) lumber of different types this seemed like a painting opportunity.