Hummingbirds have been scarce this year on the ravine. In early summer, I saw one in the butterfly bed and another in the lower garden. We experienced a veritable hummingbird drought–until August 1, the first day of my birthday month. I had just set my laptop on the porch table and pulled out my chair, ready to fully appreciate that morning’s soft, cooling rain. For a teensy-tiny second, I heard a small roar and then he whirred past my head, a ruby-throat out of nowhere. I jumped and he lingered so I headed for the den. “Dave, a hummingbird just buzzed me. Look, I have chill-bumps all over my arms.” He glanced up from the newspaper.  “You’re kidding.” Dave was in his third week…