American goldfinch

American goldfinch

Rocky Mountain maple

Rocky Mountain maple

Saskatoon serviceberry

Saskatoon serviceberry

Woodhouse’s toad

Woodhouse’s toad

brant

brant

common milkweed

common milkweed

jack in the pulpit

jack in the pulpit

paper birch

paper birch

spider milkweed

spider milkweed

western columbine

western columbine

View All Species

Join Us!

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

Visualization Tools

Screenshot of map with visualizatoins

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. More.

Geographic Affiliates

Javascript is required to view this map.

Top Observers This Week

1 Hans@CO 55
2 Carrie@MN 39
3 Wx@NC 37
4 CPPGOGAUSER@CA 16
5 Mary@MD 14