I haven't really checked them out to determine what kind of deer they are in nature. I call them "Town Deer". Many have been born and raised in town, so they have learned that gardens are the best place to find stuff to eat.
Deer are not supposed to like irises either, but town deer love them.
The only real predator they have to fear is man. My neighbor's dog just goes up to them to say "Howdy".
btw ... because there used to do a lot of ranching in this area and it's illegal to have your dog chase deer.
So, I consider the front of my house "deer territory" and anything they might like gets planted in back.
Smiles,
Lyn