5. Pinwheels
You may have seen outdoor pinwheels before, but they are more than simple decorations. When the fins have a metallic or reflective surface like this metal, solar powered ornament, they can naturally scare birds away. The sudden flashes of light startle the birds and will help keep them away from your fish pond. Pinwheels are also quite durable and only need occasional inspection to ensure they are still upright and working.
Another option is to use cheaper plastic wheels. Although less durable, they work just as well in a sheltered area.
If you have some metallic tape lying around and some sticks and string, you can use that instead of purchasing a pinwheel. Attach one end of the string to the tape, the other to the top of the stick, then plant the bottom of the stick in the ground. Be sure the tape can move around in the wind.
While the pinwheels will not work at night, birds tend to be asleep anyway. However, a dark, cloudy day might reduce the sunlight to the point where pinwheels will not work. So, you may need to employ additional methods just in case.
Similar to pinwheels, CD’s can be a great deterrent of birds. It may seem a little strange at first but hanging a few CD-ROMs around your pond can be most effective in keeping the birds away. Birds are scared of reflecting light. When the shiny side of CD glimmers and reflects light it will scare away most birds. You can use cheap pie pans that are foil or aluminum as well.