The spring chorus of frogs will be a welcome sound this year. After months of deep snow and cold, ponds and wetlands will come to life with croaking, singing amphibians.

If you’re fascinated by frogs, then come to the FrogWatch USA training on Saturday, March 28 at Hidden Valley Nature Center (HVNC) in Jefferson. From 9 a.m. to 12:30 p.m. expert naturalist Chloe Chunn will present some basic information about amphibian ecology and current threats posed to their populations. Then she’ll bring everyone up to speed on how they can help by becoming a citizen scientist.

FrogWatch volunteers will collect information about the calls of local frogs and toads during spring and into late summer. The information can be submitted online, and will used in regional and national studies focused on measuring changes in amphibian populations. Volunteers have been contributing data for more than 15 years.

To sign up for this free workshop, please visit www.hvnc.org/registration. Preregistration is recommended. All ages are encouraged. The workshop will be held in HVNC’s new education space, the Barn. It is one third of a mile from the parking area following the main ski trail. Appropriate footwear based on weather is advised.

For more information, visit www.hvnc.org, email info@hvnc.org, or call 207-200-8840.