Our neighbors, a 95-year-old couple, live across the road from a marsh. Their front yard is riddled with gopher holes. A grey heron has been visiting the yard daily to pluck a gopher out of its hole (or at least to try). Swallows them hole. I’ve seen it a couple of times. I always assumed herons ate only fish, but learned they also eat snakes and small rodents.
I never knew that!