* Simile
* Just as a damaged insect is disoriented, broken, without direction, annoying etc. so too is the helicopter an inconvenience and hovering around haphazardly
* Disparaging of modern technology - unnerving and ominous, ‘skirting’ comparing to nature
* Modern invention is like an inferior copy of nature
* A helicopter may be commonly associated with wealth, so M may be making a subtle social comment here: perhaps society is ‘damaged’ by the ever-increasing pursuit of technological and material wealth