Here's how the suffix "-tion" functions:
* It turns a verb into a noun. "Migrate" is a verb (action word). "Migration" is a noun (person, place, or thing).
* It signifies the action or process of the verb. So, "migration" refers to the act of migrating.
The meaning of "quick" isn't implied in the word "migration". It simply describes the movement of people or animals from one place to another.
If you want to express a quick migration, you would need to use an adjective like "rapid" or "swift" before "migration", such as "rapid migration".