三重県桑名郡多度町におけるツバメ(Hirundo rustica)の繁殖記録(自然教育園資料のまとめ)

概要

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The House Swallow, Hirundo rusticacome flying to iddle March and Ist. Flying nest from early May to iddle July in Tado town, Mie prefecture. The peak of average of flying chicks was 5.30 irds at same time. The 2nd, flying nests was bigan to middle June nd middle July end. Highest season was early and middle Ju]y that the eak of average of flying chicks was 5.17 birds at middle June, same time at lst. Flying nest. This seasons is showing to the highest of average of flying chicks, because of environment agree to fledgling period, I think. The 2nd, flying chicks by same pair has relation to period with lst. Flying chicks. Average of flying chicks was 4.91 birds for lst. Flying.2nd. Flying was 4.36 birds. The half-yearly flying chicks percent was about 60% and 7.54 birds for one pair. This record is more than result of Hachioji city (4.47 birds : 1960 by I.Kanai). The chicks was uniformity for both lst. And 2nd. Flying nest at early period but it is gradually unsettled. Seasonal change of fledgling chick and fledgling pair can be shown in Figure below.
国立科学博物館の論文
1972-03-25