USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Status of Spring

Status of Spring

When will spring arrive across the United States this year? Our Status of Spring maps display the predicted leaf out and bloom for early-season plants. These maps are updated daily, so check back often!

See the maps

The USA National Phenology Network

The USA National Phenology Network

We bring together citizen scientists, government agencies, non-profit groups, educators and students of all ages to monitor the impacts of climate change on plants and animals in the United States. Learn more about the USA-NPN

What is Phenology?

What is Phenology?

Phenology refers to key seasonal changes in plants and animals from year to year—such as flowering, emergence of insects and migration of birds—especially their timing and relationship with weather and climate.

Learn more about phenology

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USA National Phenology Network


USFWS Phenology Network Website

New USFWS Portal dynamically displays data for Refuges

December 15, 2017

The new US Fish & Wildlife Service Phenology Network website is a place to explore what refuges are finding through their phenology monitoring programs. Start with the five Refuge Highlights on the homepage, then explore the other refuges using Nature's Notebook on the Phenology on the Refuges page. Coming in January, all refuges across the country will be able to track the Status of Spring on their refuge.     

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Observers Needed

100% of 2017 observation goalNational Phenology Database reaches 12 million records

Nature's Notebook observers submitted over 2.9 million records to the National Phenology Database in 2017. These records were submitted by 3,238 observers at 2,239 sites across the country. 

              Learn more about Nature's Notebook »