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The Fence Post

Cat-Proof Fence--Five Miles of it

July 25, 2018 | by Joe Morrell

cat stalking in brush 

The Endangered Hawaiian 'ua'u (or more commonly known as the Hawaiian Petrel)

In the lava crevices on the slopes of Moana Loa, the Hawaiian petrel nests. Now a bit less nervously as a 5-mile hexagonal mesh fence protects these endangered birds from feral cats, who stalk and feast on the birds' vulnerable chicks. The curved floppy top of the fence prevents the cats from successfully scaling it. Take a look at this video which explains the massive undertaking of installing this cat-proof wire mesh fence in a remote location as well as showing the nesting habits of the 'ua'u (or Hawaiian petrel.) 


Some Progress

There used to be thousands of petrels and it is said that their presence would blacken the skies at particular times of the year. The population has dwindled due to increased settlements and people bringing in cats, rats, feral pigs, and barn owls. The struggle goes on as outdoor lights on homes and buildings are very disorienting to the young birds, causing groundings, which leave them vulnerable to predators. The 'ua'u is also preyed upon by Indian mongooses and feral dogs which this fence also restrains. Two years on, there are reports that this hexagonal mesh fence is proving successful as there is an upturn in the number of nesting sites in the area. 

What about Coated Hex Mesh?

Hexagonal netting (aka chicken wire) that has been coated with a coating of PVC will last and last. After the 1" hex mesh is woven from 20 gauge galvanized wire (GBW), it is completely coated with a tough, flexible, bonded layer of black PVC.

The coating is:

  • extremely resistant to cracking, chipping, and weathering
  • unaffected by extremes of temperature
  • protected from degradation from sunlight by the UV inhibitors in the vinyl

Vinyl coated chicken wire has an approximate 18 gauge overall finished thickness and is highly resistant to rust and corrosion. Black color helps the mesh blend in with the landscape, becoming virtually invisible. This long-lasting mesh works well in a variety of applications: bird pens, garden fence, around the home or farm, and as you can see--on the lava slopes of Moana Loa!

Tell us about the job and Louis Page will supply the type of fence you need.

Vinyl Coated Chicken Wire

If you are interested in more information on the restoration of the Hawaiian petrel: 


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Topics: black vinyl coated, vinyl coated, 1.5x1.5, galv after, 12.5 gauge, 1" mesh, exclusion fence

Deer Fence - Is It The Best Solution?

October 21, 2009 | by Duncan Page


portrait of deer between trees in winter

A nuisance in the fields, gardens, highways...

It is common knowledge that deer have become a problem which seems to intensify every year.  Deer have been forced into closer contact with humans as their natural habitat has decreased. Also, the numbers of their main predators, wolves and cougars, have dwindled over the years. Hence, their population is on the rebound. As a result, deer have become not only a nuisance but also, in some situations, a threat to human life.

  • Hungry deer invade gardens and areas with expensive plantings.
  • The impact on agriculture - farms and orchards - is extensive and expensive.
  • The USDA estimates that total deer damage from auto collisions and crop and timber losses
    reaches at least $1 billion a year
  • Deer on the roads cause many accidents, often fatal to both deer and people.
  • There are 1.5 million car accidents with deer each year, resulting in human fatalities, and personal injuries.
  • When deer are present there is an increased risk to humans of Lyme disease spread by ticks.
  • Deer overpopulation reduces the quality of habitat. The resulting lack of food can lead to unhealthy diseased deer.

The population increases have been in both urban and suburban areas. Forested areas have suffered, too. The over-browsing of the undergrowth of trees robs birds of habitat and disrupts new growth of trees: disrupting seedlings, buds, while the rubbing of antlers on trees can destroy them completely.

It's not always straightforward. A few possible means of control are:

  • Deer and wildlife fence barriers
  • Individual trees and plants protection
  • Plants deer dislike                                                                                                                                             
  • Devices to scare deer with sound or visual stimuli
  • Dogs
  • Repellents using odors deer dislike                                                                                                                   
      Population management                                                                                                                                       
  • Hunting
  • Culling - thinning out weak unhealthy animals
  • Fertility control


What do you think is the best solution for your particular deer problem?

Is there one solution that can address every situation? Is inaction the better strategy?

Brown Deer Near Trees


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Topics: deer fence, exclusion fence

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