The vast majority of dogs would be lucky to see 40 in a lifetime never mind a month, I know a couple of crews of lads that put good numbers away most seasons but that's 5 or 6 lads with a couple of lurchers a piece and it takes some doing.
Done 10 in a week over the Christmas holidays 20 odd years ago with a wheaten x and he seen a few other bits and pieces while out with the terriers and the lamp, looked like he'd been shot in the face with bird hail.