Urban Birdproofing Solutions

Case Study — Infrastructure Protection

This bridge was scheduled for maintenance. After years of deposits of Pigeon guano the structure wasn't faring too well. Cutting out rust preceded the repaint. Pigeon proofing was to follow.

Despite our reservations, bird spikes were specified for installing by a contractor who probably had no experience in birdproofing.

The result: The density of the pigeon population, along with the placement of the spikes, left plenty of room for the pigeons to re-establish their nests.

The better option: Correctly install structural BirdNet under the bridge to totally exclude either pigeons (50MM mesh aperture) or, use 19mm knotted BirdNet to exclude all birds. This is becoming the more common solution for bridges, especially in the Hawkes Bay.

Before Maintenance

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