Sentence:  But here is a ſpecies of ducks, called the <WSD>loggerhead</WSD>, from its large head. They have ſhort wings, are unable to fly, and only ſwim and flap along on the water at an extraordinary rate. 
Meaning of the word marked with <WSD> tags:  The (loggerhead duck) or (Falkland steamer duck) ("Tachyeres brachypterus"; formerly "Tachyeres cinereus"), a species of steamer duck endemic to the Falkland Islands.