They can land in small spaces and hover in flight
Helicopters can land where airplanes cannot.
Helicopters can land on small ships, clearings in forest, on top of buildings etc. Airplanes can not do these things
Helicopters has a limited range compared to planes. Planes need a long pave to operate while helicopters can take off and land a lot more places. Also helicopters can "stand still" in the air while planes need to move all the time. So depending on what you want to do they have different (dis)advantages.
They can hover in place and land straight down in small spots.
It is much faster and can get in and out of rough terrain that trucks cannot access.
They fly helicopters.
Helicopters are machines, they can not grow.
Helicopters are about 200 feet
yes, helicopters are dangerous
what are the grey helicopters for
A group of helicopters.
The alliteration for helicopters could be higher helicopters or heavy helicopters