The USA-NPN website will be temporarily unavailable for scheduled maintenance beginning late Sunday, July 26 through early Monday, July 27 (EDT). Thank you for your patience and understanding.
We are undertaking a major revision of our Nature's Notebook data collection app to make it easier and more fun to track plant and animal seasonal activity!
A layer of vegetation elevated above the ground. It can refer to the layer of leaves surrounding an individual tree or shrub, or to the continuous layer of vegetation that comprises the top layer of a forest.