Afternoon Nap for Vickii & Bruce Druery   I felt drowsy after lunch and lay down to have a nap— above the fields of sugar cane on the northern arm of the Tweed.   Mount Warning dominated the landscape like an ancient deity shining blue in the distance— pushing up from the earth, immoveable, guarding the green fields.   Our lunchtime conversation faded and other voices entered my head— the small birds that watched us eating under the Moreton Bay fig: finches, honeyeaters, wrens.   I was a leaf blown from a camphor laurel and drifting in the hot breeze.…