You are here
USA National Phenology Network
March 20, 2018
In most of the last ten years, the First Leaf Index has arrived days to weeks earlier than calendar spring in the Washington, DC area. This year, spring leaf out arrived 25 days earlier than the Spring Equinox in Washington, DC.
Celebrating 10 Years of Nature’s Notebook
This month we highlight two of the many species on which our observers collect data. Red maple is our most frequently observed plant with over 700,00 records and American Robin is our most frequently observed animal with over 190,000 records. Data on these species and over 1200 other species on the Nature's Notebook list are freely available for download and use. Download them from the Phenology Observation Portal or explore them on the Visualization Tool.