Technical

Which bird diverter product do I need?

The type of bird diverter you choose will be driven by planning authorities, environmental impact assessments or practical factors such as installation method, installation time and capital cost.

The CROCFAST® bird diverters are all brightly coloured, have options for glow-in-the-dark material colour and reflective stickers, and have moving components, all key factors to increasing visibility. Contact us for project-specific advice.

How do bird diverters protect wildlife?

All birds will have increased visibility of the overhead line hazard, and bird diverters have an important role near habitat areas and bird migration paths. Choosing a bird diverter with reflective, luminous and moving characteristics will increase the visibility of the powerline.

Slow-moving and migrating birds such as swans and geese are commonly at risk. A common cause of bird fatality is migrating birds, where birds at the tail end of the flock will not see the powerline because birds at the front block the view and don’t move until the last second.

How do I install the bird diverters?

On overhead powerlines the easiest way of securing bird diverters is using the CROCFAST clamp, which snaps the clamp on and off quickly and easily. The clamp can be fitted by hand, insulated rod (hot-stick) or by drone. The overhead line can be accessed using the following methods:

  1. Ground by crane, cherry picker and insulated rod (hot-stick)
  2. Air access by drone or helicopter

What bird diverter spacing is recommended?

The amount of protection that is placed on the line is dictated by an ecologist or bird specialist as part of an environmental impact assessment. Industry recommendations are typically 5 metres for static bird diverters and 10 metres for spinning or dynamic bird diverters. The CROCFAST range of bird diverters are larger and have greater movement so 6m and 12m are recommended for standard and dynamic CROCFAST bird diverters in areas of high risk. The spacing can be increased to 20m areas of lower risk.