Bits fall out of gum trees throughout the year. Whole branches die off and without warning crash to the ground.
If they're over a house, a road, power lines, people, there's a disaster waiting to happen.
We had a near miss last night. A huge old gum tree two houses along the road decided to shed a huge branch. It brought down the power line and crashed into the road, fortunately it was 2am and there was no traffic.
SES came out and cut it up, the electricity company brought a crane and re-connected the power lines and it was all tidied up in a few hours.
But, boy, with the amount of wood that came down it could have been a whole lot worse.