Great Lakes Inventory and Monitoring Network Report, Night calling bird survey 2002-2004
Resource Management Division, Grand Portage National Monument. 2005. Great Lakes Inventory and Monitoring Network Report, Night calling bird survey 2002-2004. Great Lakes Network Reports. GLKN/2005/09. Great Lakes Inventory & Monitoring Network. Ashland, WI
The initial bird inventory for Grand Portage National Monument was derived from limited field sampling in 1992-1994, and breeding bird surveys begun in 1997 (Graetz et al. 1995, Hoffman 1997-2000). As a result, species not present during the spring breeding season or which do not normally call during early morning hours had not been adequately sampled within the Monument. This project addressed one portion of this information gap by funding night-calling bird sampling from 2002 through spring 2004. Standardized methods were used to assess the presence and relative abundance of owl species; and limited informal sampling was used to detect the presence of other night-calling species in suitable habitats. The presence of three owl species (Great Horned, Barred and Northern Saw-whet Owls) in or near Monument property during the early spring nesting season were verified. Observations also suggest that two additional species (Great Gray and Boreal Owls) may be present, at least in some years, in the vicinity. Other nightcalling species documented by this study include Ruffed Grouse, American Woodcock, Wilson's Snipe, Common Nighthawk and Sora.
- Type
- Published Report
- Authors
- Resource Management Division, Grand Portage National Monument
- Date of Issue
- 2005-08-05
- Publisher
- Great Lakes Inventory & Monitoring Network
- Units
- GLKN , GRPO
- Keywords
- Barred Owl, Boreal Owl, Great Grey Owl, great horned owl, Presence (Biodiversity), saw-whet owl, sora, Taxa List Only