What Is A Group Of Snakes Called?

As a group snakes do not have a name because they're solitary animals. They do not travel or hunt in groups, they're by themselves.

Most snakes are solitary and live alone. Mother snakes tending with several babies are usually called a "nest". I know there is a word for a grouping of snakes when they breed, but I'm at a loss right now, so I could only answer part of your question. Look up snake breeding especially gardener snakes, because I know they breed this way in masses.

Nest