Up here the regulations for having possession of a raptor are VERY strict and pretty much limited to rehabilitation centres and associated "education programs" approved by the government. The regulations for possessing a raptor for falconry are, in some ways, more onerous (in terms of housing, maintenance, etc.) but are clearly defined and offer more latitude in the use of the bird. That's what I meant by "easier".

I think hunting mice and grasshoppers with a Kestrel would be in keeping with "wild quarry in its natural state". I am not interested in cleaning and eating rabbits or game birds but my Kestrel could eat mice and grasshoppers!