There has never been a nightingale in Berkeley square.
<div>At least not to my knowledge, there might have been when London was once a huge marsh, in the city of westminster central London which is the old location of the American Embassy. But I doubt very much there were nightingales flying over that busy area of London when the song came out.</div><div><br></div><div>There were until about 1970 large swarms of starlings swarming over that part of London and large swarms of sparrows singing in the trees, there were and still are skylarks flying over some parts of London but nightingales was probably just for the benefit of the song. </div><div>It is pronounced as Barkley Square by Both Americans And British speakers.</div><div><br></div><div>https://www.youtube.com/watch?v=wtCA_bEREIM</div><div>Unless you know differently where there Nightingales that sang in Berkley Square? .</div><div>Where there ever any nightingales singing in Manhattan New York presumably Times Square that caused a transference from America to London England? in the song lyrics.</div>