您要查找的是不是：
- Anous stolidusn. 玄燕鸥(燕鸥科)
- Any of several terns of the genera Anous and Micranous,found in tropical waters and having a dark brown or black color with a white or gray head. 黑燕鸥，一种燕鸥黑燕鸥和小黑燕鸥属，发现生长于热带水中，头为白色或灰色，身为深褐色或黑色。
- Any of several terns of the genera Anous and Micranous, found in tropical waters and having a dark brown or black color with a white or gray head. 黑燕鸥一种燕鸥黑燕鸥和小黑燕鸥属，发现生长于热带水中，头为白色或灰色，身为深褐色或黑色
- membranous stesia of the anous 膜性锁肛
