Thanks Alina & Kate
I might just be worrying about nothing, but since we have re-built the garden we have attracted a lot of wildlife, birds included, and i have noticed a lot of there droppings on the plants, we want to put in a feeding station, in a location that enables us to enjoy viewing the birds but also keeps them away from predators (neighbours cats) we have an ideal location, only worry is below the feeding platform is two Montana's, which will hopefully grow up around the feeding platform it is also in close proximity to the pond. Guess i'll just have to monitor the situation, for once it's an advantage i live in Scotland as it rains most days, that should wash the droppings of the plants.. 
Thanks again
Davie-S