Show FENCES MADE VERMIN PROOF bird birds require protection from varl cua cus nature foes as no well as 88 from human persecution protection la to the prime requisite for increasing the num number berof of birds in any area and the results of or protection are in direct proportion to the amount given besides insuring birds against ev ery form of persecution by human t 0 vermin proof fence A with barbed wes W I es ee B with looe loose overhanging netting hind kind we roust must defend them from varl ous natural foes the most effectual single a eo ev te is to sur surround rounO ine lae proposed bird sanctuary with a v armin proof fence such a beace should prevent entrance either by digging or by climbing but will servo serve tta ita greatest use if it cannot ba climbed and Is therefore cat proof it Is impracticable to build an impenetrable fence the next best devices devi ceIs cels to put guards of sheet metal on all nesting tree trees and on poles supporting bird houses this should be done in any case where squirrels 0 or r snakes are likely to intrude as it Is usually impracticable to fence once out these animals tree guards should be six feet or more above ground at tacha tacks by hawks owls crows jays or other enemies are beat controlled by eliminating the destructive individuals |