It will stay over night from what I've found. I only know this because on more than one occasion I have watched a bird come off the roost and strut to his death and have some sort of food in him that he did not eat on the way to me. I've found wild bird feed, corn, and acorns all in one that had to be from the day before because they literally did not put their heads down the entire time I was watching them.
This is this situation below, had to go to bed full
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