Nest Box Opening Template
Figure 12. The above templates can be used to insure your entrance holes are of the proper dimensions.
Figure 12. The above templates can be used to insure your entrance holes are of the proper dimensions.
U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/nestbox/bluenhan.htm
Page Contact Information: npwrc@usgs.gov
Page Last Modified: August 3, 2006