Difference between Skua and Bonxie

What is the difference between Skua and Bonxie?

Skua as a noun is any of various predatory seabirds of the family stercorariidae that often chase other seabirds to steal their catches. while Bonxie as a noun is the great skua, stercorarius skua

We hope you now know whether to use Skua or Bonxie in your sentence.