Q. What does Cornell recommend doing with cavities in trees? Should I fill them? Should the tree be taken down? — Patrick, Grahamsville A. The most common causes of cavities are improper pruning, ...

Question: We have a can of spray foam that says it can be used to fill cavities in tree trunks. There's a hole in one of our trees where a branch was removed -- it's about waist-high. The hole extends ...

This maple is live and healthy despite a huge cavity in its trunk. This tree is structurally compromised but does not pose a risk because it will do no damage when it fails. Surrounding trees in the ...

Woodpeckers assume a pivotal ecological role in forest ecosystems by excavating tree cavities that serve both as nesting sites for themselves and as critical resources for a diversity of secondary ...

Across New Guinea, deforestation is occurring at increasing levels. Whether it be industrial logging, monoculture plantations, hunters felling trees in pursuit of arboreal wildlife, or other forms of ...