When a fly lands on a surface it will regurgitate to get rid of the food that it has previously been on which could be anything from faecal matter to rotten flesh.
If a blow fly lands on food it will most likely deposit an egg. The eggs will hatch maggots which will eat the food and it will go rotten.
When a fly lands on your food it firstly tastes the food with sense organs in its feet. When it realises it is good to eat it then 'vomits' digetive fluid onto the food which turns it into a liquid 'soup' (on a small scale of course - this is only a tiny area but it is enough for the fly). The fly then mops it up using its modified proboscis (elongated mouthparts) which is shaped like a sponge at the end. And they tend to judge us based on our personalities!
No, but they might be carried when the food is transported.
The fly does, so when it lands on food, it can see if it wants to eat what it is on.
Flies do not make nests, they lay their eggs directly on a food source.
A fly does not defecate every time it lands but it is not uncommon for them to do so. They do not specifically defecate at certain times or in one place like many insects.
When a fly lands on you, it may be looking for food, warmth, or shelter. It may also be attracted to any scent or moisture on your skin. If you try to swat it away, the fly may quickly fly off and find another spot to land.
A yellow jacket
they like to fly
A bee fly is a member of the fly family Bombyliidae, with adults which look like bumblebees.
They find there water by the nearest sea connections like a river, lake, pool, sea, as they fly to the top of a tree and look out and when they see water they fly to it and Wha lla, they have water!
The " mouth" of the Venus fly trap is covered in a very sticky sugar substance. Flies love sugar. When a fly lands on the sugar in the Venus fly traps' mouth, it gets stuck. Then the Venus fly trap closes it's mouth and digests the fly.