PROBLEM TO BE SOLVED: To provide a bird net fastener that can reduce production cost and reduce labor required for construction, and also is superior in durability with light-weight and can facilitate mounting/de-mounting work of a net.SOLUTION: A net fastener 3 is constituted by integrally forming a flat rectangular base part 3a and a hemispherical hook part 3b on a base part 3a by an extrusion molding of hard synthetic resin. A dome type (hemispheric) hook part 3b formed of an inserting groove 3c of an end rope 5 of a bird net 1 is formed on the base body 3a. The inserting groove 3c of the hook part 3b is formed in a substantially L-shaped cross section, consecutively with a longitudinal groove 3f for fitting the rope. A bulging part 3e for preventing detachment of the net end rope 5 is provided in the inserting groove 3c.
