In priority investigation criteria, how many endangered species can trigger an investigation?

In priority investigation criteria, the presence of just one endangered species can trigger an investigation. This principle emphasizes the importance of any endangered species, regardless of the number present, indicating that their existence alone is significant enough to warrant further examination. The rationale behind this is rooted in conservation efforts and regulations that prioritize the protection of endangered species. Any potential impact on their habitat or populations necessitates investigation to ensure appropriate measures are taken to mitigate harm. As such, even a single endangered species is a critical indicator that can initiate a more comprehensive environmental assessment.