endangered. threatened.
special concern.

In Massachusetts, rare species are protected on three different levels: Endangered, Threatened, and Special Concern, listed from most imperiled in descending order.

Oxbow has worked on many projects throughout the Commonwealth to investigate site specific ecology of populations of rare species to assist project planning to minimize or avoid adverse impacts to the target population. Oxbow staff has extensive experience with rare amphibians, reptiles, and invertebrates in the northeast.