I don't know how many of you have observed this behavior :

I had an issue with my imprint gos of this year not holding weight if only fed once a day. She just wouldn't eat enough at one setting.

One day I fed her up until she would not eat any more. But she sat there on the shelf perch in my living room and screamed anyway.

It just seemed odd at the time why a bird would scream that wasn't interested in eating. Hard to figure these birds sometimes.