Spot a Dead Tree Animal Home

cougar cub

A snag is a dead tree that is still standing. Learn more about snags and the animals that use them.

What You Do

  1. Animals That Use Snags
    A snag is a dead tree that is still standing. Of course, a tree does many good things when it is alive. But after it dies, it can be just as important for wildlife.
    Here are some animals that don’t think snags are a drag at all:

    • Tree squirrels, flying squirrels, and raccoons that make cozy nests inside hollow parts of the tree.
    • Bats that rest underneath the loose bark.
    • Beetles and other insects that tunnel into the soft, rotting wood to lay their eggs.
    • Woodpeckers that eat the insects and carve out holes for their nests.
    • Birds such as owls, wrens, bluebirds, and wood ducks that move into woodpeckers’ holes after they move out.
    • Eagles, ospreys, herons, and owls that build nests atop snags.
    • Flycatchers, kingfishers, and birds of prey that use snags as perches and look-outs when hunting.

    great horned owl

  2. Spot a Snag
    Next time you’re in a forest, in a field, or near water, keep an eye out for snags. Use the checklist below to describe what you discover about each.

    • Animals using the snag: What kinds do you see? How are they using it?
    • State of the snag: Is it sturdy, or do you think it will soon fall?
    • Fallen logs: These may have been snags once. Look on, in, and under the log for more animals.
    • New trees: Tree seeds sprout, take root, and grow in the rich soil formed when logs rot away.

    snag tree