Spring brings on a kind of fever. People here in Connecticut are transformed. The many months of hunkering down and being solitary are a hazy dream. People have started saying hello in the street again. And smiling. Actually smiling. The nature reserve in my neighborhood is overflowing with baby squirrels. Squirrelets. Warblers are zigzagging out of the tops of the oak trees like so much popcorn. Baltimore Orioles are singing their bell-like song and appearing in the top branches like yellow-orange flames. Thrushes are creeping in the undergrowth. Catbirds are chortling and chattering and just plain showing off. They are such born performers. They don't flit away; if anything, it's almost as though they dance a little closer to soak up all the attention.