USA NPN National Phenology Network

Taking the Pulse of Our Planet

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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

Nature's Notebook

Nature's Notebook

Join amateur and professional naturalists in regularly observing plants and animals to generate long-term data sets used for scientific discovery and decision-making.

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USA National Phenology Network


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You can now order USA-NPN and Nature's Notebook t-shirts and other products

Feburary 2, 2016

Want to show your USA-NPN pride? You can now order products embroidered with the USA-NPN or Nature's Notebook logo, including T-shirts, Dress Shirts, Denim Shirts, Fleece Vests, Caps, Tote Bags and more. Orders may be placed through A Touch of Pride Custom Embroidery

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Observers Needed

Nature's Notebook tree 1.5 million recordsSee what we accomplished together in 2015

Check out our 2015 infographic to see the stats on the great things we accomplished together last year, including over 1.7 million phenology records submitted to Nature's Notebook, a 33% increase in active participants over last year, and 60% of records submitted by our Nature's Notebook groups!   

Find out more about Nature's Notebook »