Natural Environment and Rural Communities Bill

I support what the hon. Gentleman seeks to achieve, but I am puzzled by one point. I am not an ornithologist, but the exclusions in subsection (4) appear to include large families of birds, such as the pheasants, turkeys, ducks, ostriches, rheas and cranes. Why has he chosen to exclude all those birds, some of which are undoubtedly exotic birds in the UK context and not all of which are game birds?