A Montana bird watcher keeping birds out of a toxic mine pit is deemed ‘essential’ during coronavirus pandemic
(Matt Volz | AP file photo) In this Dec. 14, 2016 photo, a Phoenix Wailer bird deterrent sits on the bank of the Berkeley Pit in Butte, Mont. The wailer, which emits different sounds at random times, is one of the devices used to keep birds from landing in the toxic water of the former copper mine.