USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Status of Spring

Status of Spring

Spring continues to arrive early in the west and late in the east. Spring is four weeks early in southern Utah and eastern Washington and 5-6 weeks early in the Grand Canyon. Spring is a few days late in Birmingham, AL, and Charleston, SC.

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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


Pheno Forecast Maps

Coming this spring - Pheno Forecast maps

February 8, 2018

This year, we will deliver six-day forecasts for key pest and invasive species to inform management. These forecasts are based on published growing degree day (GDD) thresholds for given life cycle stages. Sign up to receive notifications.

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 Celebrating 10 Years of Nature’s Notebook

Cathie Bird, 10 year Nature's Notebook observer

This month we celebrate one of our long-time observers. Cathie Bird has been submitting observations to Nature’s Notebook for all 10 years of the program! At her home in Tennessee, she tracks the phenology of Northern Cardinal, Black-capped Chickadee, and more! Cathie has created a rich, long-term dataset that can show changes in phenology over time. 

Learn more »