I think that was a bit of a sweeping statement that the P.C. officer made.
My advice would be, Continue feeding the birds but ration it out carefully so that you never have a surplus of food, especially after dusk. Hanging bird feeders are best, positioned where rats cant get at them, smooth metal poles are ideal.
Occaisionally turn your compost heap over with a fork, rats hate disturbance and it will help the compost to rot evenly too! All the Best Tbird+