Modern fences are often so thoroughly impenetrable, they can slice up already-scarce habitats and restrict wildlife to increasingly small scraps of land. What can be done to reduce their impact?

Eleven years ago, the City of Ottawa tore down their brown plastic fence. Today, grass has nearly covered the phantom post holes along the corner lots in the quiet suburb of Orléans.

It can, but not always. The construction and material of the fence, the reason for adding one, and the area where you live factor into the value a fence adds to your home. A fence can increase value ...