
%0 Journal Article
%A A. Pochop, P. 
%A L. Cummings, J. 
%A M. Engeman, R. 
%T Field evaluation of a visual barrier to discourage gull nesting
%J Pacific Conservation Biology
%D 2001/06/10
%V 7
%N 2
%P 143-145
%K 
%R https://doi.org/10.1071/PC010143
%U https://www.publish.csiro.au/paper/PC010143 
%X Expanding gull populations along the Columbia River have been implicated in depredations to threatened and endangered migrating salmon smolt. We tested a visual barrier made of woven black polypropylene fabric to discourage gull nesting. The barrier was installed on Upper Nelson Island, Benton County, Washington, in parallel rows spaced 5 m apart. Gulls used 87% of the 7.9 ha island as nesting habitat and we estimated >21 000 gull nests, 80% Ring-billed Gull Larus delawarensis and 20% California Gull L. califomicus nests. The zone with fencing had 84% fewer nests than the control zone. Silt fencing showed potential as a nonlethal bird management technique. 
