Att 7.1 Exhibit C Reflective Marker (Reference Document).pdf
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- Solicitation number
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Department of Agriculture Forest Service
About this file
This document is an instructional guide for fence marker construction and installation, originally developed by the U.S. Department of Agriculture's Natural Resource Conservation Service and modified by the Bureau of Land Management (BLM).
The guide specifies materials and procedures for constructing durable fence markers designed to reduce wildlife collisions, particularly for Greater Sage-grouse and Lesser Prairie-Chickens. Materials required include vinyl under-sill trim strips (12 feet each, manufactured by Georgia-Pacific for house siding, yielding 48 markers per strip) and all-weather foil reflective tape (1.5 to 2 inches in width). Construction involves laying undersill strips with the lip facing downward, applying reflective tape to the flat side, and cutting strips into 3-inch pieces using a miter saw or tin snips, with allowance for 2 to 3-inch variations to accommodate different barb spacing on wire fences. Installation requires snapping markers onto top wires between barbs at approximately 3-foot intervals, alternating reflective sides to ensure visibility from both sides of the fence. The document includes a diagram illustrating proper marker placement and references three research sources documenting fence marking effectiveness for reducing avian collisions.
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Text version
Attachment 3-1
Example: Fence Marker Construction and Installation Guide (U. S. Dept. of Agriculture, Natural Resource Conservation Service, Modified by the BLM)
NOTE: This diagram displays the proper placement of the fence markers.
Materials Vinyl under-sill trim strips – 12 ft each manufactured for house siding by Georgia-Pacific 12 ft strip yields 48 markers
Reflective tape all-weather foil tape; 1.5 - 2 inch width
Construction
1. Layout undersill strips with “lip” facing down. Apply reflective tape to flat side of strip.
2. Cut undersill strips into 3-inch pieces using miter saw (tin snips work for smaller projects).
Tips: Multiple under-sill strips can be stacked and cut at once to expedite production. Markers will need to fit between barbs on wire fences, so it is recommended that barb spacing on the planned fence be taken into consideration. If the barb spacing on planned fence is unknown, cut a variety of marker lengths between 2-3 inches to allow for varying barb spacing.
Installation
Snap markers on top wires between barbs at approximately 3-foot intervals as shown above. If reflective tape is used, alternate every other marker so that reflective side shows on each side of the fence.
References
Christiansen, Tom. 2009. Fence Marking to Reduce Greater Sage-grouse (Centrocercus urophasianus) Collisions and Mortality near Farson, Wyoming – Summary of Interim Results. Unpublished Report. Wyoming Game and Fish Department.
Stevens, B. S., K. P. Reese, and J. W. Connelly. 2010. Impacts of Fences on Greater Sage-grouse in Idaho: Collision, Mitigation, and Spatial Ecology. Thesis Research Progress Report. Unpublished.
Sutton Avian Research Center. Fence Marking for Lesser Prairie-Chickens: A cooperative conservation solution.
http://www.suttoncenter.org/pages/fence_marking_instructions.
http://www.suttoncenter.org/pages/fence_marking_instructions
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