January 1938 – vol. 32, issue 8–268 have often been made to put down in writing a rendering of the notes of birds. A difficulty at once presents itself from the fact that few of these renderings really correspond adequately with the original. Yet they have a certain value because they serve to recall for the recorder the notes he has heard and enable him to recognize them when heard again. To other ears they might suggest a sound en... This article is only available to registered users.To read more, please log in or purchase a subscription.