Helicopter sighting

There is something that I have been noticing recently when we are out in the garden (which is fairly often as we've had nice weather): there has been quite a lot of helicopters flying above us recently. Airplanes too, but mainly helicopters, or at least they are more noticeable. Some are small and probably civilian ones, others are larger and seem to be army vehicles. Maybe it is a sign of summertime, maybe I just notice them more because the sky is clear and blue. Be that as it may, I have always been excited to see helicopters, now spotting them makes my day.