five times in quick succession just before the song began 
but this v;as not invariably the case. I heard the well-known 
clucking call whenever the bird was within 50 or 60 yards. 
It resembles most closely the cluck of the Chipmunk ( 
) and to-night at least was not once given until 
the song was well under way, usually beginning with the 5th 
utterance of the whip p oorwill and invariably coming in exactly 
at the end of the first syllable,thus: whip ( cluck ) poorwill , 
and not, as has been stated by writers, between the calls. It 
did not seem to interrupt the continuity of the whole utterance 
(whippoorwill ) but rather appeared to be given simultaneously 
with the close of the first syllable and perhaps the beginning 
of the second. Indeed it v;as difficult to believe that the 
cluck and whippoorwill were both uttered by the same bird, 
the effect being decidedly that of one bird singing and 
another near it clucking a sort of accompaniment. There can 
be no doubt, however, that one individual did produce the two 
sounds. After the clucking began, it always accompanied 
each utterance to the end of that period of singing. 
It would be difficult to improve on the popular 
and long-established rendering of the song of the Whippoorwill 
( Antrostomus vociferus ). Whether the sound comes from afar 
\ \ 
or from within a few rods, the bird says 11 whippoorwill" with 
almost perfect distinctness, emphasizing the first and last 
syllables strongly. The song can be heard nearly, if not quite, 
a mile away when the air is still and damp as is usually the 
