The neighbor has one and in the fall the squirrels bury the nuts all around my landscape. So in spring and summer I find them randomly growing around and dig them up.
"Delicious nuts"? Oh! If you are talking about squirrels finding the meat inside the seeds of the Black Walnut trees. Now English Walnuts are sold in grocery stores, because humans enjoy the favor of the meat of English Walnut seeds, but not Black Walnut.
My neighbour has a massive black walnut tree in his backyard (which overhangs our backyard) and every autumn it drops a ton of fruit... we don't eat it, but the squirrels certainly do have a feast on their hands.
This guy likes cemetaries. Also, everyone i have asked about burr oaks has said it is a more rapid growing tree. Similar to a monterey oak. This same info can be found in books and online but he says that it is slow growing.....?