Since the 1950s , their numbers have fallen but over large parts of New Zealand hedgehogs are still more numerous than in Britain .
To judge by roadkill figures , hedgehogs were 50 times more numerous in New Zealand than anywhere else .
Since the 1950s , hedgehogs ' numbers have fallen but over large parts of New Zealand hedgehogs are still more numerous than in Britain .
To judge by roadkill figures , hedgehogs were 50 times more numerous in New Zealand than anywhere else .