I visited the US Fish and Wildlife area just outside of Richville, NY, on the Boland Rd. on May 14th. I drove through the preserve and as I crossed the bridge I saw this Great Blue Heron with a very large bullhead in its mouth. I witnessed the heron spear the fish several times to kill it. I watched the heron try repeatedly to swallow the fish but after around 30 minutes of watching I decided to leave the area and I do not know what happened to the fish or to the heron.