Male grasshoppers chirp in night in order to gain the attention of female grasshoppers for mating. It is also a dissuasion to repel other males.
yes a grass hopper actually does chirp
no of course not it's made of like, chocolate filling, or at least that's how my mom makes it..... but I'm sure in Africa or else where they do.....just a thought. Not that you couldn't add them...
If you go into a field you don't find one grasshopper you find none or thousand's! so for their habits I think that would be a yes.
Usually not since grasshoppers are vegetarians. But, if a grasshopper is smaller than a grasshopper he might chose to eat him.