Oh my, I can sympathize this this mama bird! 😀 why is it that offspring go from content to starving in 2 seconds flat?!?! They don't care if it's the first time you've sat down for the day, when they decide they're hungry (even though you may have just fed them a meal that they normally love but have decided that today they don't like rice!) you must either feed them or listen to the squalking.
It's a good thing they're so darn cute!!!