While fences can prevent a moose or deer from wandering onto a runway, birds are more difficult to control.

A blocking fence had prevented Moe from taking after the cars that had already gone.

He said the fence would prevent terrorists from getting to his family.

The fence prevented the antelope from reaching their natural feeding grounds, and hundreds died.

The fences prevent strong vortex shedding with low separation frequencies.

In general, they were little more than fences to prevent stock from straying and to protect against wild animals.

The fence prevents fans from watching games from the roofs of nearby buildings.

Electrified fences, 15ft high, prevent the bears escaping and the public getting in.

"The fence doesn't prevent the Roma from coming to the village," he said.

A short fence prevented the escape of animals that might attempt to swim the river.