What helps a hover fly survive?

* Large flight muscles: Hoverflies have large, powerful flight muscles that allow them to generate the lift necessary to stay in the air. These muscles are located in the thorax, and they can account for up to 25% of the hoverfly's body weight.

* High wing beat frequency: Hoverflies beat their wings very rapidly, often at frequencies of over 100 times per second. This high wing beat frequency creates the lift that keeps the hoverfly in the air.

* Lightweight body: Hoverflies have a lightweight body, which helps them to stay in the air. Their bodies are made of a thin, flexible exoskeleton, and they have a high proportion of air space in their bodies.

* Ability to change wing direction: Hoverflies are able to change the direction of their wings while they are flying. This allows them to control their flight direction and to maneuver in tight spaces.

* Eyesight: Hoverflies have excellent eyesight, which helps them to navigate their environment and to find food. Their eyes are located on the top of their head, and they have a wide field of vision.

* Sensory hairs: Hoverflies have sensory hairs on their body, which help them to detect changes in air pressure and wind direction. These hairs are located on the head, thorax, and abdomen, and they help the hoverfly to maintain its balance and to fly in a stable manner.