It sat on the edge of a short cliff formed by glacial boulders. At the bottom of the cliff was a small pond that made a home for Canada geese and bullfrogs. The deck off the rear of the house was shaded by a canopy of oak and maple in the summer, and by hemlocks year round. We had a lot of freeloading birds who worked the half dozen feeders mounted off the deck and in the surrounding trees. One of the few things I enjoyed doing around the house was inventing ways to keep the squirrels out of the feeders. It was a battle of wits I never entirely won. There was one tough, mangy old squirrel who used to sit on the railing and stare at me. I thought he might be the head of engineering, sizing up the competition.There was a wall of glass between the deck and the living room. It was so hot that afternoon I couldn’t leave the air-conditioning, so I just sat there and looked through the windows at the competing fauna. I was on my third tumbler of Absolut when Abby came home from wherever she went during the day.