Ever since canadas went on the list i get calls from golf courses,holiday parks etc,all sensetive areas,they want them gone but dont want anyone to know. .22 rimfire subsonics,very early or last light ,head shots only and still they flap around for a good while,very tenacious of life. Air rifles no way up for the job,also very importantly they are on the open general licence but you must be able to prove good reason for culling them.