Hop off your bike and walk past a magpie’s nest. Change your route for the next six weeks if possible. Attach a flag to the back of your bike which is higher than your head level. Stick a pair of printable eyes on the back of your helmet. (If the magpie has seen this before, it may not deter it, as they can learn the difference between real and fake eyes). Fasten plastic cable ties echidna-style to your helmet to try and prevent them from getting at your head.
Residents should be aware as it is peak magpie swooping season.