March 20 is the first day of spring, and that means frogs, toads and salamanders are leaving their overwintering sites and migrating to the vernal pools and ponds where they will breed and lay eggs. Since there can be many hundreds of amphibians on the move, there’s even a term for these annual events—”Big Nights”.

“Big Nights” can be challenging and dangerous times for amphibians—some of these slow-moving creatures must travel up to a quarter of a mile away. Unfortunately, because forest and wetland habitats are often disconnected by development, many encounter roads and long driveways. By slowing down and driving with extreme caution, especially on rainy nights above 40 degrees, you can help save lives!

If you are aware of a migration hotspot, consider taking an alternate route to your destination or simply avoid traveling on smaller, wooded roads. You can also speak with your local town officials about installing amphibian crossing signs.

By the way, springtime is an opportune time to visit vernal pools—they are literally swimming with wildlife! In addition to amphibians, you’re likely to see turtles, birds, snakes and all kinds of insects.

Also called woodland pools or ephemeral pools, these temporary wetlands found within forested landscapes are small depressions that are not connected to a flowing water source. They are filled solely by groundwater levels or rain/snow runoff. They are ideal breeding locations for amphibians because they are unable to support fish, potential predators of eggs and young, due to their impermanency. In addition to being just breeding habitat, they are necessary components of the forest food web and their productivity hints at the health of the local ecosystem.