What do the following name and words have in common?

RENOIR
LUNETTE
CROQUET
TURNSTILE

HINTS:
#1: It has to do with the first syllable of each word.
#2: Think phonetically

Answer:

The first syllable of each word - phonetically - is the name of a bird:

RENoir - wren
LUNette - loon
CROquet - crow
TURNstile - tern

Credit:
NPR Weekend Edition Sunday Puzzle
February 7, 2010
Will Shortz