Rocky Mountain maple

Rocky Mountain maple

Saskatoon serviceberry

Saskatoon serviceberry

Woodhouse’s toad

Woodhouse’s toad

western columbine

western columbine

jack in the pulpit

jack in the pulpit

spider milkweed

spider milkweed

common milkweed

common milkweed

paper birch

paper birch

brant

brant

American goldfinch

American goldfinch

spring azure

spring azure

olapalapa

olapalapa

six-spotted tiger beetle

six-spotted tiger beetle

flowering dogwood

flowering dogwood

Eastern collared lizard

Eastern collared lizard

Virginia strawberry

Virginia strawberry

common loon

common loon

common sunflower

common sunflower

jewelweed

jewelweed

Ashe's juniper

Ashe's juniper

creosote bush

creosote bush

Cascades frog

Cascades frog

Northern leopard frog

Northern leopard frog

bigleaf lupine

bigleaf lupine

Northern elephant seal

Northern elephant seal

white-tailed deer

white-tailed deer

chum salmon

chum salmon

chinook salmon

chinook salmon

bighorn sheep

bighorn sheep

bighorn sheep

bighorn sheep

buffelgrass

buffelgrass

singleleaf pinyon

singleleaf pinyon

scarlet tanager

scarlet tanager

quaking aspen

quaking aspen

bitter cherry

bitter cherry

white oak

white oak

Red Rothomagensis lilac

Red Rothomagensis lilac

Eastern chipmunk

Eastern chipmunk

rough-skinned newt

rough-skinned newt

painted trillium

painted trillium

wine grape

wine grape

California poppy

California poppy

Eastern redbud

Eastern redbud

Northern water snake

Northern water snake

quaking aspen

quaking aspen

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We are looking for volunteers to help us monitor plant and animal species found across the United States. Click “Observe” to join us!

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USA National Phenology Network

The USA National Phenology Network brings 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. The network harnesses the power of people and the Internet to collect and share information, providing researchers with far more data than they could collect alone.

Learn more about us

What is phenology?

Phenology refers to recurring plant and animal life cycle stages, or phenophases, such as leafing and flowering, maturation of agricultural plants, emergence of insects, and migration of birds. Many of these events are sensitive to climatic variation and change, and are simple to observe and record. As an USA-NPN observer, you can help scientists identify and understand environmental trends so we can better adapt to climate change.

Why is phenology important?