I've seen people with bird problems just throw bird netting over plants.
The birds will still get any fruit within beak reach though...
I wonder if those really lightweight net curtains would allow
enough sun through?
There's generally loads of them at second hand shops.
They're really handy for all sorts of things such as protecting transplants/seeds from sun and birds
Peppers and tomatoes will ripen off the plant (in the dark even) if they've already started to 'colour up'.
They'll never have the flavour or nutrition of properly ripened fruit, but better than nothing...
Maybe if you went with netting of some sort, you could take off the fruit within the birds' reach
and ripen it somewhere safe, leaving the remainder on the netted plants to ripen 'properly'?