Do the hoverflies escape after their release in the open field?

Unlike bees or bumblebees, hoverflies are not social animals that return to a hive. By nature, they visit flowers to find pollen and nectar to feed on. Consequently, after their release they tend to disperse homogeneously around the area surrounding the release point in search of food. If they find nectar and pollen, they will not fly very long distances and will remain near the release point. Unlike bees, which can be attracted or repelled by certain flowers and communicate with each other where to find them, hoverflies do not discriminate the type of flower where they search for food, nor do they communicate with each other where to go.