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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.
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G. McK. Allcock (1957) studied this question.
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