Birds eat crops, damage property, and leave deposits of droppings and nesting material.
Similar information is also given on gulls, pigeons, sparrows, starlings and swallows. Beyond the DIR resource I was unable to find a real Internet focus for this subject area and the DIR resource itself, in my opinion, would benefit greatly from a major expansion. There is nevertheless a lot of information on bird control on the Internet and I will mention a few of the other scattered sites that I came across in my searches. These generally deal with sites pushing bird control products. I am not a bird control expert, and mention of these sites is not intended to endorse the products.