If you hear what sounds like ducks in the early spring take the time to check it out. You may end up at a vernal pool that has wood frogs. Our sources for this episode include: In Alaska Wood Frogs freeze for seven months - http://www.latimes.com/science/sciencenow/la-sci-sn-alaskan-frozen-frogs-20140723-story.html Wood Frogs are Explosive Breeders - http://www.vetstreet.com/our-pet-experts/10-things-you-may-not-know-about-frogs Wood Frog - https://www.nwf.org/Educational-Resources/Wildlife-Guide/Amphibians/Wood-Frog Ten Facts About Wood Frogs - http://tenrandomfacts.com/wood-frog/