There are several differences between the rules of coursing in Great Britain (where it is regulated by the National Coursing Club) and Irish coursing which has been organised by the Irish Coursing Club since 1916. Because hares are not plentiful in all parts of the island of Ireland, mainly due to modern agricultural practices, coursing clubs are licensed by the Irish government to net 70–75 hares for their events. The hares are then transported in boxes to the coursing venue where they are kept for up to eight weeks and trained to be coursed.