As a 50's kid in Toowoomba, every September I was relentlessly pecked, knocked over and pinned down by protective maggies. Until by accident I found by holding a golf club well above my head, the cranky birds would not approach. Viola !!! :-) No need to swing it either. They're too smart to risk a wing near the stick.
Approaching nesting season, their calls change from a musical gargle to a harsh sounding rasp - time for me to dig out the maggie stick and carry it over my shoulder when I leave the house.
Has served me well for the last 55 years.