Northern Prairie Wildlife Research Center
Steven A. Knode - Refuge Manager
Long Lake National Wildlife Refuge
Moffit, North Dakota
In 1987 two electric predator fences were constructed in conjunction with the Fish and Wildlife Service's Extension Program to cut off two 30 acre peninsulas. A third fence was constructed on Long Lake Refuge proper to create a 14 acre nesting island.
All of these areas were nest searched but extensive searches have been done on the 75 acre Brown's Island on Long Lake since 1985. Over the last two years of nest searching Brown's Island the average nest success has been 83% (72% and 94%) with an average of 151 (167 and 136) nests per year.
The nesting islands and predator fences do work in this district and should be continued where possible.
(The 1988 data is included in the paper but was not available at the time the abstract was written.)