Sierra Newt – Powerful Water Drive & Deadly Skin

First published June 10, 2017 California and Sierra Newts are native to California. In winter and spring, Sierra Newts in Nevada County respond to an over-powering urge – to return to the pond or stream where they were born. Reproduction Hormones cause this migratory breeding behavior, known as water drive. (The hormone, prolactin, is also responsible for human breast milk production.) The …