I MET JACK THE DEMON CAT on September 11, 2001; he was here in the driveway, a stray who’d apparently chosen me, when I arrived from Manhattan late that morning. This year, September 11 was marked by flocks and flocks and flocks of raucous birds flying overhead, a winged migration of dramatic proportion that had me sitting outside listening, and watching (and Jack going mad inside, where he belongs, watching me watch).Imagine how frustrated Jack was when the black-throated blue warbler (below) stunned himself on the glint of the glass porch door. I gently righted him, and then we sat awhile together, talking softly, until he was ready to continue on, Jack staring in disbelief from indoors, where I hold him hostage to protect my avian friends.But our