What percentage of Emperor penguins were found to remain with the same partner for consecutive breeding seasons in a 1999 study?

Answer

About 15 percent

A 1999 study indicated that only about 15 percent of Emperor penguins maintain the same partnership across consecutive breeding seasons.

What percentage of Emperor penguins were found to remain with the same partner for consecutive breeding seasons in a 1999 study?
theorySoulmatepenguinpairmonogamy