Ledson Marsh in Santa Rosa’s Trione-Annadel State Park is a popular place for hiking and biking. The marsh dries up in the summer, but in the winter you can hear a symphony of pacific chorus frogs. This recording was made by Bernie Krause with Wild Sanctuary.
Listen to the sound of Ledson Marsh in Trione-Annadel State Park
![A Pacific treefrog at Ledson Marsh.](https://npr.brightspotcdn.com/dims4/default/bec8ac7/2147483647/strip/true/crop/3556x2028+0+0/resize/880x502!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F4e%2Ffa%2F9bf1a4974e0ba71d645d69d707c0%2Fpacific-treefrog-ledson-marsh-ca-veronica-davison-crop1.jpg)
Veronica Davison;USFWS