. . . . . . . . . "Tsuga canadensis" . . "Sphyrapicus varius" . . "jkmoffett. 2017. Tsuga canadensis interaction->parasitised by Sphyrapicus varius. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/4937934> 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." .