Your ears are sensitive, when they pass close to your ear, they do not make a noise, your ear simply picks up the sound of their vibrating wings and it is very high pitched because of the speed at which they move to stay airborne.
According to the related link below, a few butterflies (not all of them) make clicking sounds to protect their space.
Cicadas cry. T~T
chirp
Yes, some insects in the desert make noise: cicadas, crickets, for example.
it is the cicadas
cicadas
Cicadas shed their skin and it looks like a brown thin skeleton. Cicadas make a funny noise that is often confused with grasshoppers.
Cicadas
there noise helps them talk to each other
Apparently, only male cicadas make sounds.
cicadas buzz because they love hot weather so they make the zzzzzz sound when it is warm
The noise that crickets and cicadas make at night is generally a mating activity. It is likely that there is little that can be done to stop it. It is possible that shining a bright light in the area where are will stop them briefly.
A chorus of cicadas.
No, cicadas are not carnivorous. Both the larvae (nymphs) and adults feed on plant sap.
See the hgic.umd.edu link to the right. THis link has some good information. They show up in late May and can last two to six weeks. 17-year Cicadas come out in mass in heavily wooded areas. They number anywhere from 100,000 to 1 million during the cycle, depending on fires of the last 17 years. They are harmless, but make lots of noise.