- The Value of Black Cottonwood Trees shows black bears feeding on the catkins, a porcupine eating the leaves, cottonwood leaf beetles feeding on the leaves, a gall with aphids, and the use of cottonwoods by beavers.
- For information about the nutritional quality and use of the catkins by black bears look at /sites/default/files/Willson%20et%20al.%202012.%20%20Black%20bear%20foraging%20on%20black%20cottonwood.%20Northwestern%20Naturalist..pdf
The Value of Black Cottonwood Trees
https://vimeo.com/373673613