. . . . . . . . . "Poecile atricapillus" . . "Rhus typhina" . . "Paul Tavares. 2013. Poecile atricapillus other species in group Rhus typhina. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/8953191> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .