It has been a rough day or two for those of us affected by the blast of frigid air ushered in by the “polar vortex.” These are also tough times for wildlife, often determining who survives into springtime. Today someone excitedly called my attention to a flock of American Robins. A dozen or so birds had gathered near some windows; they were alternately picking fruit from neighboring Hawthorne trees and sheltering themselves from the brutal wind along the building’s wall. A thaw is coming in a couple of days. I hope the birds can tough it out ’til then.