Bob Eager wrote:

My mother recently had her little front garden block paved, as she is no
longer able to maintain it as a 'green' garden.

She is distressed to find that bird droppings show up quite badly! She
is having difficulty removing the mess, but would like to do so herself
(she is very independent). She can't bend too well.

Any ideas, please?

I've used a very stiff scrubbing brush, made to fit on the end of a broom
handle. They're old-fashioned, but very effective - and they don't require
bending.