Conservation Evidence strives to be as useful to conservationists as possible. Please take our survey to help the team improve our resource.

Providing evidence to improve practice

Individual study: Simple measures to deter coastal birds from roosting on oyster culture gear, eastern New Brunswick, Canada

Published source details

Comeau L.A., St Onge P., Pernet F. & Lanteigne L. (2009) Deterring coastal birds from roosting on oyster culture gear in eastern New Brunswick, Canada. Aquacultural Engineering, 40, 87-94


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Deter birds from landing on shellfish culture gear by suspending oyster bags under water Bird Conservation

A replicated and controlled experiment in summer and autumn 2006 and 2007 in oyster Crassostrea virginica farms off the coast of New Brunswick, Canada (Comeau et al. 2009), found that suspending oyster bags 6 cm under the water significantly reduced the number of birds roosting on them (1 bird/100 bags on submerged bags vs. 37 on controls). However, suspending bags 3 cm below the water did not significantly reduce the number of birds roosting (15 birds roosting/100 bags).

 

Deter birds from landing on shellfish culture gear using spikes on oyster cages Bird Conservation

A replicated and controlled experiment in summer and autumn 2006 and 2007 in oyster Crassostrea virginica farms off the coast of New Brunswick, Canada (Comeau et al. 2009), found that ‘AntiCormo’ devices (spikes attached to oyster cage floats) significantly reduced the number of birds roosting on oyster cages (0-1.3 birds/100 cages at one site with AnitCormo cages; 0-42 birds at a second vs. 100-499 birds/100 cages at a control farm). Five species were seen on oyster cages (double-crested cormorants Phalacrocorax auritus, herring gull Larus argentatus, great black-backed gull L. marinus, common tern Sterna hirundo and great blue heron Ardea herodias).