In Chapter "Winter animals" Thoreau writes in a very eloquent way about partridges and hares. But then he sounds a bit rough and rude. The last paragraph of the chapter starts with:
What is a country without rabbits and partridges? They are among the most simple and indigenous animal products; ancient and venerable families known to antiquity as to modern times; of the very hue and substance of Nature, nearest allied to leaves and to the ground,—and to one another; it is either winged or it is legged.
Webster's Dictionary defines an animal product as "a product made from animal material"
Does he really name hares and partridges "animal products" in today's contemporary meaning? How one should understand the phrase properly?