A Study of the Audio?Frequency Radio Phenomenon Known as "Dawn Chorus"

Abstract

The main characteristics of dawn chorus, as observed at Wellington, New Zealand, between July 1955 and October 1956, are presented. These are: no general correlation with whistlers; a strong correlation with simultaneous local magnetic variations; a pronounced diurnal variation in activity, with the peak occurring near 0400 hr local time; and possibly a weak seasonal variation in activity.