The dawn has brightened my morning walk and, by the time I am out here, plenty of other residents have already been active. Quickly, I see and hear some migrants. A flock of Canada geese goes over, and a pair circles the nearby swamp where they have nested several times in recent years — and likely for another year. The loud trumpeter swans and a lone calling sandhill crane add much more vocals to these calm quiet hours. The water bird movement …