Hey, me again XD
I agree with you about our domestic kitties generally not "seeing" a natural diet - they aren't out there hunting rabbits, mice, voles, birds, and what-have-you. However, there is a HUGE difference between wolf-->dog and wild cat-->cat. the TL;DR version is that, genetically and physically speaking, cats have changed VERY little since we "domesticated" the African wildcat. Cats have ... basically changed zero in terms of their digestive tract. They are NOT adapted to digest grains or other plant-based foods.
Dogs, however, are completely different. They literally evolved an "expansion" on an existing gene that helps them digest starches and glycogen. (e.g., the wolf has two copies of this gene; some dog breeds have as many as 29.) This means a dog CAN digest plant-based matter and can actually derive nutrients from it, whereas a cat cannot.
This doesn't mean a dog CAN'T be fed a raw diet - they're still carnivores, not quite omnivores. But cats are obligate carnivores, which is why it's so sad that so many cat foods have a grain as the first or second ingredient. A dog will forage fruits, veggies, and plants in a feral situation... a cat will not.
I HAVE gone frankenprey/whole prey with my cat briefly before I went to a ground meat-bones-organs blend. I fed pinkie mice, guinea pigs, day-old chicks, and day-old quail, along with some chicken meat and organs to shore up to the proper percentage. However I had a really hard time getting my cat to "chew" her food - to use those delightful shearing teeth she has - and after a while I started having to chop up the whole prey. Which didn't really bother me as long as they were frozen while I chopped XD
The prey items really didn't smell, except a bit like blood - which doesn't bother me (taking care of my dad, I've smelled that and worse!) I ordered the critters from suppliers online, but it was prohibitively expensive because of the frozen shipping charges. I'd love to get her on whole prey again because it really IS the best for her teeth (that shearing abrasive action on the fur, feathers, and bones) and because I'm all for the most natural diet possible.
Long story short, I think you absolutely can supplement Kaida's normal diet with some pinkie mice or chicks or whatever you can get from the falconer. Warm them up to "body temperature" if they're frozen (though it really will NOT harm a cat to eat a frozen mouse - in a feral situation a cat will happily snarf a frozen critter it finds dead in the snow!) If she doesn't accept it, try cutting it just a little in one place so that she can really smell the blood and it isn't just "oh what a fun toy you've brought me!" ;}
Other than Dr. Pierson's site, here are two other really good raw-feeding sites you can poke through at your leisure:
I'm super lucky that my cat was ridiculously easy to transition to canned from kibble, and from canned to raw... I pretty much went cold turkey both times and had no problems. I personally think switching to raw really improved Win's overall condition, energy levels, fur softness/density, and has slowed down her health issues (mostly her kidney failure, which has NOT gotten noticeably worse since her diagnosis four years ago). Her poops are small, dry, white, and literally DO. NOT. SMELL. (#1 benefit, IMO!) Her IBD has not flared up badly since being on the raw diet. I honestly can't soapbox a raw diet enough. But I'm fortunate - I can afford it (though a lot of my paycheck goes towards this cat, I swear) and it IS harder to store and prep - her raw food takes up one entire shelf of my freezer, and I have to take normal raw-meat handling precautions while thawing it - this goes for whole prey feeding as well, although most whole prey sourcing companies breed their product in a lab with little danger of contamination.
Sorry for going off on so many tangents, but - yes - you can give whole prey items as treats or as meals a couple of times a week. I recall reading about someone here on CF who fed canned four out of seven days a week, and whole prey the other three days.