That's all well and good for scientific names, but there is nothing wrong with colloquial names. We have 6 names for cougars that I can think of, and one of them is "Moutain Lion."
From Websters:
Main Entry: buz·zard
Pronunciation: 'b&-z&rd
Function: noun
Etymology: Middle English busard, from Old French,
alteration of buison, from Latin buteon, buteo hawk
Date: 14th century
1 chiefly British : BUTEO
2 : any of various usually large birds of prey (as the turkey vulture)
Turkey Vulures are not birds of prey. They eat carrion.