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Damage to Trees and Shrubs

Damage to trees and shrubs caused by mammals and birds is fairly easy to identify. Here is a short list of species that tend to do the most damage to trees. Click HERE for more photos of tree damage.

Yellow-bellied sapsuckers drill rows of holes in trees. They come back to favorite trees. Notice the freshly drilled holes below a row of older holes.
Yellow-bellied sapsuckers drill rows of holes in trees. They come back to favorite trees. Notice the freshly drilled holes below a row of older holes.

Photo: Willowbrook Wildlife Center

Woodpeckers

Woodpeckers drill several different types of holes in trees. Small holes are made while they are drumming to attract mates or alert other woodpeckers that they have claimed this territory. Larger holes are made so that they can excavate a small cavity within the tree to provide a roost during the colder months or a nest during the spring or summer. Holes with a vertical or horizontal pattern are made while the woodpeckers are foraging for insects under the bark.

Click HERE for woodpecker information, damage prevention, and control methods.

Beavers

There is no mistaking beaver damage. Since beavers eat wood and use trees to build their dams, they need to take down several trees to survive.

Click HERE for beaver information, damage prevention, and control methods.

Close up of a tree with beaver damage. Teeth marks are clearly visible.
Close up of a tree with beaver damage. Teeth marks are clearly visible.

Photo: Laura Kammin

Voles often eat the bark from shrubs during the winter when food becomes harder to find under snow cover.
Voles often eat the bark from shrubs during the winter when food becomes harder to find under snow cover.

Photo: Terry Kem

Voles

Like rabbits, voles will eat small twigs and bark close to the base of the tree. Since they are so small, they cannot scrape off much bark at one time. However, prolonged feeding at the base of a young tree can girdle and kill it.

Click HERE for vole information, damage prevention, and control methods.

Deer

Deer can damage trees when they repeatedly rub their antlers on them. Deer will also browse young saplings during the growing season and strip bark from trees during harsh winters when other food is unavailable.

Click HERE for deer information, damage prevention, and control methods.

Deer have used this tree as a rub so many times the bark is totally stripped off and the wood underneath is shredded.
Deer have used this tree as a rub so many times the bark is totally stripped off and the wood underneath is shredded.

Photo: IDNR

This small dogwood sapling was damaged by a rabbit during a period of snow in the winter. Rabbits will eat bark from trees and shrubs during the winter if they cannot find other food.
This small dogwood sapling was damaged by a rabbit during a period of snow in the winter. Rabbits will eat bark from trees and shrubs during the winter if they cannot find other food.

Photo: Laura Kammin

Rabbits

Rabbits will clip twigs or chew bark from young trees. The damage they cause is limited to their reach. During warmer months, the damage is confined to less than six inches above ground, but during snow cover they will climb snow drifts to feed higher.

Click HERE for rabbit information, damage prevention, and control methods.