Tiny songbird with a large high-pitched range (4)

I believe the answer is:

wren

(Other definitions for wren that I've seen before include "Very small brown songbird (4)" , "Architect of St Paul's Cathedral" , "Small British bird" , "serving girl" , "Very small brown songbird with erect tail" .)

I've seen this clue in The Guardian.

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.