[Overread]

hmm If you can genetically bring creatures back from the dead - what is to stop you reprogramming certain aspects of their mentality or construction (there big plot idea and a subtheme if you wish - teh morals and ethics of manipulating the genetic structure from the norm -- how far is too far?

As for raising the animals - well first off feeding would be done (least in the UK) with dead animals for the carnivores - never live food (considered inhumane). After that each creature would need its own different set of needs and desires - this would have to be determined by study of closest living relatives of the species, study of its environment and also the actual experience of keeping the animal captive.
As for the birds Quokka is right though when ever I have seen large indoor enclosures they are almost always for the short flight birds - things like parrots and doves which though capable of longer flights are quite happy to fly and hover short distances. Larger birds (3mwingspane ones for certain) don't do well in these enclousures as they simply don't have enough space to fly - they more used to crusing very long distances in normal flight. Thus these tend to be trained (tagged) and flown outside - at zoos they combine this with the shows to add an attraction