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 ...

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 ...

Don’t tell your dentist I said this, but cavities are not only a good thing to have, they are also an essential component necessary for many species of animals to survive. Of course, I’m not talking ...