Marsh tit, I think
According to Wikipedia, it is difficult to distinguish from the barn tit and the great tit, but since it appeared in the forest and Google also thinks it is a marsh tit, I’ll leave it at that; ornithologists are welcome to correct me.
Small, just as nimble as you would expect from a tit, this one was very quick to stuff its beak full and whizz away like an arrow. Bon appetite…
