Every spring, when the ground thaws, nighttime temperatures exceed forty degrees, and rain begins to fall, amphibians can make massive migrations. On these nights, known as “big nights”, one may find dozens or even hundreds of frogs and salamanders moving about as they move toward their breeding grounds.

 

While many amphibians may reach their pools unhindered, an increasing number of them are encountering a dangerous obstacle – roadways. Many amphibians may become victims of car impacts, and those that do avoid tires may be indirectly afflicted by road salt and other pollutants. As a result, MBN was formed in 2018 to assess these issues while helping ensure as many amphibians can complete their migrations as possible. MBN is a nonprofit community science project where volunteers conduct the majority of the data collection and amphibian-shepherding, and it is the only statewide project of its kind. With its data, the project hopes to inform future infrastructure planning to become more wildlife-friendly. MBN partners with Of Pools and People to bring amphibian conservation to Maine.

 

MBN recorded data on over 20,000 amphibians and at over 300 road locations throughout the state as of 2023. Hundreds of community members have volunteered for MBN, but there is always room for more! Whether you are a student, scientist, field expert, newcomer, adult, or child — all backgrounds are welcome.