
TY  - JOUR
A1  - A. Pochop, P. 
A1  - L. Cummings, J. 
A1  - M. Engeman, R. 
T1  - Field evaluation of a visual barrier to discourage gull nesting
JF  - Pacific Conservation Biology
JO  - Pac. Conserv. Biol.
Y1  - 2001
VL  - 7
IS  - 2
SP  - 143
EP  - 145
KW  - 
UR  - https://doi.org/10.1071/PC010143 
N2  - 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. 
ER  -

