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The Nature of Phenology 4/20/19

Big Night

Producers: Hazel Stark & Joe Horn
Host: Hazel Stark

Photos, a full transcript, references, contact information, and more available at

When weather conditions are just right for the first time in the spring—temperatures above 40, rain, or especially high humidity—over half of the breeding population of many of our local amphibians migrate to their breeding pools on what is referred to as “Big Night.”