Yellowstone buglers (3)

I believe the answer is:

elk

(Other definitions for elk that I've seen before include "European moose" , "Fraternal American" , "Large northern deer" , "Asian moose" , "American animal" .)

I've seen this clue in the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.