Late spring frost damage of aspen leaves.

Late spring frost damage to white spruce buds.

Hail damage on stem of aspen.

Stem damage to Scots pine caused by yellow-bellied sapsucker.

Woodpecker holes on white spruce stem indicating internal colony of carpenter ants.

Stem girdling of white spruce caused by porcupine.

Felled aspen trees by beaver activity.

Bark stripping of white spruce by black bear.

Snowshoe hare stem girdling of young lodgepole pine.