Could you explain what exactly you mean by Preserves?
Here we understand Preserves as places where hunting is usualy prohibited all the time and where WILD birds got a place to grow in number.
From your posts I understood that you mean some birds (sometimes exotic for these places such as Hungurian partrige) that were kept at farms untill some age and than released to the wild.
I don't see difference between this and Dig's (UK) explanations. Moreover Dig said that farmers catch WILD pheasants and breed them locally! It's funny, since what time Carasian Pheasant became local UK wild bird?!
I guess there must be said the difference between half-free ((or half-wild) as we call them) birds depends on age of birds to release and the following conditions of their habitation in wild.
If birds been released several hours before hunting - personally I'll never visit this place again, it's shame. If birds been released in mid summer, but hunting season will be opened in fall, it's not so good anyway and hunting will be so-so.
Personally I prefer 100% wild and local birds such as snipe, woodcock, black grouse...
