日本鳥学会誌
Online ISSN : 1881-9710
Print ISSN : 0913-400X
ISSN-L : 0913-400X
栃木県渡良瀬遊水地のチュウヒのペリットから見つかった鉛散弾
平野 敏明小池 勲塚原 千明
著者情報
ジャーナル フリー

2004 年 53 巻 2 号 p. 98-100

詳細
抄録

We collected a total of 296 pellets of Eastern Marsh Harriers Circus spilonotus from their winter roosts (two sites) in Watarase Marsh, Tochigi Prefecture between January 2002 and late February 2004. Out of these pellets 18 contained a total of 24 pieces of lead shot. Although most of the pellets (14) contained only one piece of shot, two pellets included two and three pieces of shot. Among the prey species found in the pellets along with lead shot, ducks accounted for 55.6%, and doves and crows 11.1%. A significantly higher frequency of lead shot in Marsh Harriers pellets was found in January and February, during the open season for game birds. Although lead poisoning is not yet known to have had any profound effect on the harriers using the study site, care must be taken to protect them from lead poisoning.

著者関連情報
© 日本鳥学会
前の記事 次の記事
feedback
Top