I have known them to nest on hemlock mast alone in Pennsylvania, and in Michigan on the pine mast after the beech mast was gone.
The old birds never feed in or near the nesting, leaving all the beech mast, etc., there for their young.
beech mast is so called also, because beech trees abounded in the forest of Dodona.
When they are feeding on beech mast, they often will not touch grain of any kind, and the mast must be used for bait.
Swine formed at this time a most important portion of the live stock, finding plenty of oak and beech mast to eat.
beech mast, as it is called, was formerly used for fattening swine and deer.
The ground was strewn with acorns and beech mast and horse-chestnuts, quite worth picking up.