A-ringin' a bell

[Sylphidae]

This phrase is still from the movie, Ice Age.

Sid: Wait, aren't you going south? The change of seasons, migration instinct. Any of this a-ringin' a bell?

What does the above expression mean? Is it right to use it in a formal conversation?

[Mister Micawber]

.
To ring a bell is to cause to remember. The form you quote no doubt represents the dialect of the movie character.
.
_________________
Native English teacher at Mister Micawber's