(Hint: If a bird keeps returning to the same branch, a nest is likely nearby.) • Use the magnifier from Challenge 1 to explore the bark on a tree’s trunk or its leaves. These are great places ...

By Aislinn Sarnacki Have you ever noticed how much tree bark varies in texture, color and pattern? If your answer is “no,” I ...

Bark serves as the skin of the tree, protecting the internal plumbing ... Shade, beautiful foliage, flowers, and fruit that attract birds count among their qualities. Welcoming these long-lived ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows.