新疆鸟类新纪录——白腹鹞(Circus spilonotus)

Eastern Marsh Harrier Circus spilonotus,a new record of bird from Xinjiang

白腹鹞（Circus spilonotus）又叫东方泽鵟,在阿勒泰地区布尔津县（47°46′N,86°49′E）有多次记录,现确定为新疆新纪录种（或亚种）。但是,在2015年5~7月繁殖期观察,发现它可能与雌性白头鹞（Circus aeruginosus）杂交。两者无论是在形态与行为,还是在地理分布隔离方面,都存在疑团,其分类地位值得商榷。

The Eastern Marsh Harriers（Circus spilonotus）were recorded several times at Burqin County,Altay Prefecture,Xinjiang now it was identified as a new record of bird in Xinjiang. However,in the breeding period from May to July,2015,a nest was found in Burqin（47°46′33″N,86°49′25″E）that the female may be related to Western Marsh Harriers（Circus aeruginosus）such as a hybrid harrier. Both in morphology and behavior,or in the geographic isolation,there are many doubts about the Eastern Marsh Harriers（Circus spilonotus）and Western Marsh Harriers（Circus aeruginosus）,and their taxonomic is worth for study.