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How can I protect the fish in my dam from predator birds?

 
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Location: Cambodia
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I believe I could grow things on top of the water - but I'm not sure what.

I am in Castlemaine, Victoria, Australia - hot summers, cold winters.

Thanks to all.
 
pollinator
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Not sure if that would work
What preditors are you worried about?
Herons, osprey, cormorants all hunt in different ways And would need to be countered in different ways

David
 
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If the fish have more cover, then any of the predators David listed above are going to have a harder time snagging them. Do you have any vegetation planted around the banks that provides hiding spots, like cattails or mangroves? Is the bottom flat and sandy, or is it a jumble of rocks with small caves and tunnels? Maybe you can find some broken pottery or sewer pipe that you can add to provide more cover.
 
pollinator
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Drop some old tree branches into the pond as cover and habitat.
 
pollinator
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I believe Geoff Lawton has suggested netting covering the pond in sometimes necessary.
 
John Macgregor
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Thanks a lot for those sound suggestions. I'll probably try all of them.
 
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I'm not sure if this would work on other birds besides pigeons and such, but you may want to read about Robop - the Robotic Falcon.
 
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A net. Or a dog. Long experience, unless you are a crazy meth-addled person that is ever-vigilant and never sleeps the acting-crazy and firing shots off in the air approach doesn't work.
 
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When I had an ornamental pond, I had a problem with predator birds. They were thwarted by deeper water. I also planted lilly pads, but deeper water did the trick immediately and then the pads grew in
 
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I think American Water Lotus should do the trick. Edible tuber and seeds - BIG stalk



 
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Geoff has a system where he stretches a net across his pond, except he places it 2-3" under the surface of the water. The birds get caught in the net, drown, then become fish food.

Problem becomes solution.
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