A group of live webcams documented a pair of Eastern screech owls in Murrysville preying on a Northern cardinal at a feeder and plucking a mother bluebird from a nest box within the past week.

To those who read my last article and were eagerly awaiting “Warblers whose name contains the word ‘black’,” I apologize. When I saw Mr. Bluebird fly to the front of the box carrying a bug, I knew ...