Mountian to Sea Trail construction effects on Northern Saw-whet Owl

Objective: To assess impacts to the local saw whet owl population caused by construction of the Mountains To Sea Trail and by increased levels of human activity as a result of trail use. Attempted to document population density, territory placement, and reproductive activity.

Facts from the Community

From the ABC base

Lead agency/organization:

Lead contact person(s):

Data manager:

Locations georeferenced?:

  • Yes

Project start and end dates:

Start (Date/Time) End (Date/Time)
  • 2000
  • 2000

Results summary:

  • Results suggest that barred owl activity and certain types of human activity may discourage saw whet owls from locating their breeding season territories where these disturbances are present.

Comments:

  • Year 1 study of planned three year study. I do not know if the subsequent, post-trail construction study was implemented.
  • Density - Estimates based on area along transect encompassing maximum detection distance (i.e., distance within which detection is thought to be 100%).
  • Territory spacing in relation to disturbances- Disturbance categories included motor vehicles, daytime human pedestrian activity along trails and parking areas, night time human activity at camping and residential areas, and barred and great horned owl activity.
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