No, I don't think there is any reason why they could not eat raw corn - parrots back home certainly do and that's why the farmers hate them

I just boil it a bit to get the sweetness enhanced (and because I always make one or two extra ears for myself). I forgot to tell you that I actually boil it 2 minutes exactly (I use a timer), I remove the pot from the stove immediately, drain the boiling water and fill it up with cold to stop the cooking process completely (I also keep on changing the water as it warms up with cold water).
I don't know of an aviary situation but I know of plets that have 'hooked up' with lovies and budgies so I guess it depends on the particulars of the situation.