Most of the adults have stopped feeding young birds.
It is fun to watch the youngsters try to figure out the feeders.
This is an immature redheaded woodpecker.
Immatures have gray-brown heads, and the white wing patches show rows of black spots near the trailing edge.
Adults have bright-red heads, white underparts, and black backs with large white patches in the wings, making the lower back appear all white when perched
source - https://www.allaboutbirds.org/guide/Red-headed_Woodpecker/id