Birch trees and their bark come on many colors. Read more at The Old Farmer's Almanac.
Paper Birch
Birch, Description, Tree, Major Species, & Facts
Birch Trees: Planting & Caring for Birches
Appreciate the Bark! Rotary Botanical Gardens
Gardening 101: Birch Tree - Gardenista
Birch Trees 101, 43% OFF
River Birch - Fedco Trees
Species Spotlight - Betula papyrifera (Paper Birch) - Edge Of The Woods Native Plant Nursery, LLC
Birch Trees 101, 43% OFF
Using Birch in the Garden for Light, Rhythm and Texture – Susan Rushton
Betula pendula - Wikipedia
How to Grow and Care for a Paper Birch Tree
Birch Tree: How to Grow + 11 Most Common of Birch Trees