References: Kavanagh/Leung Animal Tracks Pocket Guide, Education.com
References: Mammals of the Pacific Northwest, Chris Maser, Unsplash.com stock photos, nationalgeographic.com/animals/mammals/group/squirrels
References : sciencing.com/what-part-of-the-flower-holds-the-nectar-13426365, agamerica.com/top-10-pollinators-in-agriculture, nps.gov/katm/blogs/bear-hibernation, commons.wikimedia.org/wiki/File:Scintillant_hummingbird_(Selasphorus_scintilla)_female_in_flight_3.jpg, commons.wikimedia.org/wiki/File:Rufous_Hummingbird,_female_02.jpg