You Do Need power plug adapter while traveling from Pitcairn Islands to Burkina Faso.

Here is Why You Need An Adapter

The outlet and plug type used in Burkina Faso are C and E and in Pitcairn Islands is I. This is how they look like.

Pitcairn Islands

In Pitcairn Islands, outlets of type I are in use.

Type I

Burkina Faso

In Burkina Faso, outlets of type C and E are in use.

Type C

Type E