chicken wire 
noun [mass noun]
Light wire netting with a hexagonal mesh.These cylinders, measuring but a nanometer or so in diameter, display a surface of hexagonal carbon rings that give the material the appearance of a honeycomb or chicken wire....
- To prevent deer from damaging young trees and shrubs, surround them with wire cages made from chicken wire or hardware mesh.
- The only sure-fire way to protect tulips and crocuses and other tasty bulb treats from squirrels is to lay wire mesh such as chicken wire on top of the bed.