The familiar sound of a chorus of frogs is one sure sign that spring has arrived, and is an important part of the animals' courtship during mating season.

The Pacific Tree Frog, also aptly known as the "chorus frog," is the one responsible for all-night "concerts" in and around wetlands in the Pacific Northwest. Another species of frog native to Cortes Island is the Northern Red-legged Frog. Although humans are less likely to hear its croaks made primarily underwater, frogs are important indicators of a healthy ecosystem, explains Autumn Barrett-Morgan, a director with Friends of Cortes Island Society.

She spoke to CKTZ News about the native species of frogs and their amphibian relatives newts, salamanders and toads that are found on Cortes, their identifying characteristics, and their importance in forest and wetland habitats.

Listen to the full interview below: