. . . . . . . . . "Acanthis cabaret" . . "Betula pendula" . . "Jon Sullivan. 2018. Acanthis cabaret interaction->ate seed of Betula pendula. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/10233932> 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." .