The temporary closures, which start May 12, are part of a forest health project the Boise National Forest says will mitigate ...

These are some of the identifying characteristics of the Douglas fir tussock moth caterpillar ... including bark beetles, ...

A new state report out this week finds conifer tree deaths – including iconic species like the Ponderosa and Pinyon pine – ...

In total, mountain pine beetles have damaged about 5,600 acres of forest. An additional culprit was the Douglas-fir beetle, which exceeded levels not seen in almost a decade, although the balsam ...

The beetle enters the tree via little holes in ... the flatheaded borer contributed to the deaths of more than 250,000 Douglas fir trees in this area — more than the four previous decades ...

this management goal is threatened by increasing tree mortality — the result of building competition pressure between trees in dense forest stands and a rash of Douglas-fir bark beetle outbreaks.

An insect called the western spruce budworm continues to be the most widespread forest pest in Colorado, but a bark beetle with notable infestations in places such as the Grand Mesa is the ...