I'm going to agree, oddly I just noticed my year and 2 month old, male Green Cheek Conure doing something weird with his tongue, though I hadn't considered that he was "itching" it.
I first noticed him doing this last week, I as eating dinner and he landed on my shoulder and was trying to take the food right out of mouth, as usual lol, and when I gave him a little piece of sweet potatoe he ate it and then started sticking his tongue out of his mouth the entire way and rubbing it all over his beak. It was bizarre. He has now been doing this every single time I feed him anything, but he doesn't do it when he's eating his own food like his pellets, seed mix, or veggies. But every time he gets even a little piece of people food he eats it, and after he's swallowed it completely he sticks that tongue out and rubs it all over his beak for a couple of seconds.
Who knows...I just got back from taking my Senegal to my CAV, I'll be making an appointment for my Green Cheek later today...I can't wait to tell them that his problem is "sticking his tongue out and wiggling it around after he swallows any people food".
"Dance like nobody's watching..."