Electric fencing reduces heron predation at Northeastern trout hatcheries
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Published source details
Tobin M.E., Glahn J.F. & Rasmussen E.S. (1997) Electric fencing reduces heron predation at Northeastern trout hatcheries. Proceedings of the Eastern Wildlife Damage Management Conference, 8, 16-19.
Published source details Tobin M.E., Glahn J.F. & Rasmussen E.S. (1997) Electric fencing reduces heron predation at Northeastern trout hatcheries. Proceedings of the Eastern Wildlife Damage Management Conference, 8, 16-19.
Actions
This study is summarised as evidence for the following.
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Use electric fencing to exclude fish-eating birds Action Link |
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Use electric fencing to exclude fish-eating birds
A before-and-after trial in August-November 1996 in Pennsylvania, USA (Tobin et al. 1997), found that electric fencing was fairly effective in deterring great blue herons Ardea herodias from raceways (long, 3-6 m wide fish ponds) at two trout hatcheries (declines from 6-14 birds/h/day and 76-159/h/day to <3 and <58 after electric fencing was erected). Fences comprised two strands of polyethylene tape (1.6 cm wide, 15-30 cm apart). Herons were counted (4 counts/week before and after installation; additional counts to 62 days after installation). Reductions in fish predation were not assessed.
