A nice little video from T.S. Wright showing Cog, the Hybrid Falcon, and Loki the Lurcher digging a Jackrabbit out of a hole after a long flight.
This is real four-species interaction, and real three-species partnership!
Jack Rabbits are actually a type of hare and do not den underground (neither do Cottontail rabbits), but will bolt into a hole if chased in hot pursuit. I am not sure what made the original hole, but given the area, it would have to be badger, fox or prairie dog I would think.