ML88645831
作者
日期
地点
- 年龄和性别
- 年龄未知雄鸟 - X
媒体文件注释
Adult and immature males gathering grit on road. Note the bird that is left billed compared to the one that is right billed.
观察细节
we observed 24 Red Crossbills during the day: one group of 11; one group of five, several groups of two to three, and singletons. All RECRs occurred in areas with high densities of Red Spruce. Glenn Hodgkins recorded the calls from each group using his iPod. Glenn subsequently submitted the best sonograms to Matt Young, at Cornell, for analysis. From the calls recorded from the group of 11, Matt estimated that these 11 included at least 7 "Type 10" and 4 Type 3" - believed to be only the third time that Type 3's have been documented in Maine, the first two on Monhegan in the fall/winter of 2012/2013. Finally, among all 24, we estimate a ratio of 80% males to 20% females.
技术信息
- 型号
- Canon PowerShot SX50 HS
- ISO
- 160
- 焦距
- 215 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/6.5
- 快门速度
- 1/160 sec
- 尺寸
- 4000 pixels x 3000 pixels
- 原始文件大小
- 4.26 MB