Field Guide: A-Z

What to look for right now

Photo of an eastern phoebe nest with chicks inside, begging, with bills open.

Eastern phoebes build mud and plant nests under eaves of homes; listen for their hoarse, insistent calls: “FEE-bee! FEE-bee!”

Image of a gray squirrel

Gray squirrel young begin leaving the nest

Flowering dogwood start to bloom in the woodlands through April.

Photo of a plains gartersnake taken in Lakewood, Colorado.

As Spring starts gartersnakes and other herps become active.

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Aquatic Invertebrates

Aquatic Invertebrates

Birds

Birds

Butterflies and Moths

Butterflies and Moths

Fishes

Fishes

Land Invertebrates

Land Invertebrates

Mammals

Mammals

Mushrooms

Mushrooms

Reptiles and Amphibians

Reptiles and Amphibians

Trees, Shrubs and Woody Vines

Trees, Shrubs and Woody Vines

Wildflowers, Grasses and Other Nonwoody Plants

Wildflowers, Grasses and Other Nonwoody Plants