https://www.youtube.com/watch?v=ax1KiaVyp2g
https://www.reddit.com/r/AnimalsBeingJerks/comments/j5ma34/i_no_longer_have_a_grill/
Acorn woodpeckers drill holes and wedge acorns into them so the cache lasts through winter.
A metal grill lid can stand in for bark: the bird hammers acorns into any gap it can wedge shut.