Dragonflies are active all year long in temperate climates. Sometimes they can be seen flying in a circle or a figure-8 and this is called a swarm. They swarm when feeding.
When a group of dragonflies is flying in the yard it means that they are looking for food. Dragonflies eat other smaller bugs. A group of them in the yard might also mean that mosquitoes are present.
A group of flying squirrels is called a "Dray".
A group of flying fish out of water is considered a flock. In their natural habitat in water, flying fish typically swim in schools.
As a type of bat, the standard collective nouns for bats can be used:a colony of flying foxesa cloud of flying foxes
1000 cause they were flying
There is no specific collective noun for a group of flying June bugs. The general collective noun for flying insects will work: a swarm of June bugs.
A formation.
a skein
Your boarding group when flying with this airline is determined by factors such as your ticket class, frequent flyer status, and when you checked in for your flight.
Birds. They probably evolved from flying seabirds.
A formation
THE FLYING TIGERS