The Species of Concern list is used to direct data acquisition at WYNDD. The list summarizes information on species in Wyoming that are rare, endemic, disjunct, threatened, or otherwise biologically sensitive.  Plants and animals are considered for inclusion on this list of they are vulnerable to extirpation at the global or state level due to:

• their rarity (e.g., restricted geographic range, small population size, or low population density),
• inherent vulnerability (e.g., specialized habitat requirements, or restrictive life history), and/or
• threats (e.g., significant loss of habitat, sensitivity to human-caused mortality, or habitat disturbances).

The conservation priority of any species needs to be assessed on a case-by-case basis using established methodologies developed by the Natural Heritage Network and WYNDD biologists. The following lists are intended to provide decision makers and the public with sufficient background information to determine which species are the highest priority for conservation attention and often scarce dollars for implementation.

Not all rare species are equal, however. Species that are common or widespread globally, but rare at the periphery of their range, are often viewed as a lower management priority than locally restricted endemics or disjuncts. Likewise, threats, population trends, biological significance, viability, and other factors need to be taken into account when determining conservation priorities. This list is intended only as a reference for decision makers and the public. The selection of conservation targets is still the responsibility of management agencies guided by input from informed citizens and constituents.