Northern Spotted Owl

Northern Spotted Owl at the Andrews Forest
Northern Spotted Owls and their prime habitat, old-growth forest, have been the subject of intensive investigation at the Andrews Forest LTER site for 40 years. This research has been a foundation for transformation of federal forest policy from an emphasis on timber production to protection of biodiversity.
Photo courtesy of: 
A. Levno, US Forest Service
Long-term research reveals causes and consequences of environmental change