crying loud

I have two babies at the moment both around the same age (fledging age), currently still on 3 feeds a day as they're slow to take interest in seed. No issues health wise with the babies, steady weight if theyre not gaining (at fledging age). One baby constantly cries like it wants food even...

Alright so Lila has been making this wierd noise. When I come to take her out of her cage she starts doing it and won't stop until I place her on her play stand or give her something to eat. I'm just worried that she may be doing it because she's in pain or something so if any of you could tell...