. . . . . . . . . "Prunus pensylvanica" . . "Castor canadensis" . . "Marv Elliott. 2015. Prunus pensylvanica interaction->herbivory by Castor canadensis. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2412538> 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." .