Since they don't hunt for their food, it is believed kitties have an abundance of energy saved up and release it by way of playtime. In 1999, Marra took a job as a wildlife ecologist at Smithsonian's Environmental Research Center to be on the entrance lines of human encroachment on the natural setting. When West Nile virus started leaving a path of useless crows, he began looking into chook mortality. In 2011, he publisheda paperin theJournal of Ornithologythat followed the fate of younger gray catbirds in the Maryland suburbs. Soon after leaving the nest, seventy nine % of birds had…