Are you asking if other's macaws beg for food? Or the ice specifically? Not sure so I'll share about ours...
I have a B&G, Max, who is somewhere between a child and puppy, but like most parrots, when his 'flock' eats, he also eats. If we sit down on the sofa with chips or any kind of snack, he will waddle his blue butt over and climb up and you see the head popping up looking around like, hey you're eating without me, what do you have?? I live with health issues which caused me to eliminate dairy and gluten from my diet, so my 'ice cream' has no dairy, so not the worst thing (tho he does not really get more than a taste), but if I sit down with the little pint containers (only size dairy / gluten 'ice cream' come in!), he will climb up and little pull the container in my hand towards him so he can poke around and see if I got ice cream with nuts which he will dig out. And when my husband eats Scoops chips, swear Max can hear from upstairs and he comes begging
My daughter has a recently adopted B&G, Titan, and we just found he likes ice. The weirdo will grab a piece of ice out of her water and chew / lick on the water cube.
So, you're feathered baby is pretty normal really!!
I actually used the flock instinct to get my little bare eye too girl to eat healthy foods. She arrived to our home never having even seen a veggie in her short barely 3 years of life... she would not eat them out of her bowl, but we quickly found she wanted to eat whatever we were eating. She would think she was 'stealing' food and go running across the table with whatever she grabbed, so I started making a pile of fresh foods on my plate and angled my plate so she could run up and 'steal' something from that pile. She would take off thinking she had the greatest treat in the world, and I just smiled that she was finally eating fresh veggies! After a while she realized no one was chasing her, so she would just sit at the table with us and eat with us.
But it's natural for parrots to want to eat when their family, so bring along something good for him too
We would love to see photos!!