On 14/10/2020 11:33, Andy Burns wrote:
My holly bush is having a bumper year for berries, but the birds don't
seem to have noticed, have they all gone colour-blind?

I have always how well birds can see at night
I often disturb day flying birds at night when they are roosting, they
fly off and I dowonde ow well they can see to find a new place to rost.