an abandoned persimmon plantation here, comprising
both 'non-astringent' (eaten as a firm fruit, such as
the 'Fuyu' fruit you buy at the supermarket), and
'astringent' persimmons, which can't be eaten firm
ripe,but have to be left to become very soft.
This is a fruit of a variety called Nishimura wase that isn't astringent when seeds are present (and is astringent when no seeds form).
The birds have decided the fruit is ripe enough to eat. Personally, I would have left it to become a dark orange-red before eating it...