Thanks, Anne, for clearing that up. It’s much less bizarre that the fledglings, 
after being old enough fly well, move out of the host territory at dusk to 
roost, but still fascinating because it’s not clear why they should leave if 
they are only going back again in the morning. Maybe they don’t know the 
boundaries, or maybe it’s a bit of exploration, seeking out places where they 
might feed on their own later on. When they return by day to the host 
territory, do they continue to be fed by the hosts?

- - Dave Nutter

> On Apr 12, 2020, at 10:14 AM, AB Clark <anneb.cl...@gmail.com> wrote:
>  the FLEDGLINGS (juveniles that have left the nest and are flying, at about 
> 10-20 days old) are often leaving on their own, at dusk, to ROOST (sit in the 
> dark) away from their foster-parents territories, but still returning to 
> those territories in daytime.
> 

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