Interior least tern
The species was prevalent on Missouri until early 1900s. Loss of open sand bars for nesting led to endangered status.
In the NPS atlas of species the expedition described
Least tern
Discovered in the area now between Blair, NE and Modale, IA. This species was prevalent on the Missouri until the early 1900s. Loss of open sand bars for nesting has led to its endangered status.
Source: National Park Service, Lewis and Clark National Historic Trail Park Atlas.
Where it’s being seen today
2 research-grade iNaturalist observations between 2021–2025. Most recent: 2025-05-17. Sourced from Terrain360 trail captures, cached locally.
Journal References
15 journal entries mention Interior least tern