When it comes to hand rearing chicks, I feel a bit confused. This goes for all types of birds, not just IRNs.
People always say that hand feeding chicks helps them to be more tame in the future. They are more used to being around people and handling. I know that it obviously doesn't guarantee a tame chick if continued interaction isn't done.
And then people say that non-hand reared chicks can't be tamed and are more difficult to handle.
Here's where I get confused. I'll use a couple of my birds for my example and I apologize if this gets lengthy.
My Ruby, SI Ekkie, was hand fed as a chick. She wasn't mine in the beginning, and I got her at almost 1 year of age (11 months). She is completely tame and handleable. The only problem is that she has no idea that she's a bird! She doesn't know how to play with toys and doesn't want to. She can't and won't try to fly. She basically has no idea who to be a bird. Playtime to her is sitting here with me while I read or watch TV. I try with every effort to get her to play, give her all kinds of options and she simply doesn't know what to do with it. She's now four years of age and completely the same.
Now, let's look at Posey, my Albino IRN. She was not hand fed as a chick, was parent raised. She was used as a breeder by two or three different breeders before we got her at the age of 2. (of course, she never successfully bred by any of the previous owners). This bird is completely independant, flies well, plays with all her toys like she should and can keep herself occupied for hours on end. She is also totally tame!
I'll pick Simon next, a TAG. He was hand fed as a chick, then stuck in a cage for the first 10 years of his life. I got him about 8 months ago and he was meaner than a snake! Now after working with him he is quite tame, although cage agressive. Anyway, he is a very independant bird and knows how to be a bird, plays with his toys and can keep his mind occupied.
Paisley is my 12 year old cockatiel who was not hand fed as a chick, is tame and is also independant. She doesn't play with toys, never has, but she can keep herself occupied and knows how to be a bird.
Wealsey is an English Budgie and was not hand raised and he too is a very confident bird.
Lily, the LCA, was a wild import many years ago (before I was even born as a matter of fact) and while she is quite independant and head strong she doesn't really know how to be a bird much (she has had a very questionable history).
Mork and Mindy are BFA's and they are breeders; completely confident in their birdie selves, independant and will stand up to anyone who questions them!

I realize that differences will occur with the various breeds and personalites but my overall feeling is that non-hand fed chicks are more independant birds as they get older. Being a vet tech with small animals, it reminds me much of kittens. When many of them are hand raised instead of raised by their mothers, they can be quite nippy when they get older not knowing their limits and what is acceptable behavior that is taught by their mothers (it doesn't go for all cats but in my own experience, it does happen).
So, what are your personal feelings on this? Wouldn't chicks that are reared by their parents have just as much potential as being tame, handleable birds as those that are hand fed? As long as the owner is able to handle them quite often as they get older and ready to wean wouldn't there be a better chance for them to still be nice, tame birds but still know that they are indeed birds? Still know the traits that their parents teach them to make them more independant and comfortable with their surroundings?
It's just something I've thought about over the years and I dont even know if it amounts to anything, but I wanted to post anyway and see what everyone thinks of this.
Thanks for your input! I'm excited to read your replies!!!