We had no idea how much of an instant nuisance these birds can become, quickly. For some reason a few if them picked our home as their new home one day. They discovered the small openings at the end of the gutters, where the gutter "helmets" stop. Within two days there were a dozen of them at 5 different locations. We feed birds year-round, but this was the first time in 12-years we even saw a Starling. They are loud. They poop all over the place. And the 1st two that arrived originally had enough nesting material in one section to start a colony. So, I had some metal mesh leftover from a tile flooring job. After cutting several pieces I climbed up on the roof and, after cleaning out the nesting materials*, I installed the mesh "caps". The birds hung around for another day after that, maybe hoping they would be able to get back in, but now they are gone. Crisis averted. Advice : don't have any openings anywhere! If they do arrive act immediately to det...