"Keilder Hunt" is another very old border hunting song although from the other side - Northumberland, I think. A Fell Pack is a pack of dogs that hunt over fell side country i.e. very hilly, unsuitable for horses, the hunters follow on foot - you may not have to be gentry, but you do need to be fit.

Sorcha is perfectly correct - "...hunting, it is a Tool for Wildlife Management" If you do not do employ it the greater animal population suffers including the species subject to the hunt.