作者
日期
地点
- 年龄
- 未说明
- 性别
- 未说明
观察细节
Six birds feeding incessantly along the south edge of southern (first) treatment pond behind MDI HS. Remarkably difficult to see at first as they remained tucked into weeds and cattails. Eventually they swam out and foraged unconcernedly below us. Although they swam through the Lemna (duckweed) guzzling through those patches, the birds actually seemed to be working their bills into the muck below the duckweed. I don't think they actually consumed the duckweed but instead were searching for invertebrates below the weed and in the mud. Large, long-necked and long-bodied ducks with bright orange-red to ruby bills that had a gray nail. The face was brownish gray to gray (slightly paler and grayer on at least one or two birds), crown brown, and the dark brown eye surrounded by a complete white eyering. Black ran down the back of the neck from the nape to back. Breast and back deep chestnut brown. A pale bar ran along the side where the wing coverts were exposed. The anterior (upper or leading) portion of these coverts were lightly buff washed. The tail and rump were black. The undertail was white with varying amounts of black spade-like markings (some birds with smaller and sparser markings; some with it so dense that the undertail appeared blackish). Where the chestnut brown breast met the black flanks the transition was sharp (i.e. no grayish band and thus suggesting these were northern ssp. fulgens). What I could see of the side of the abdomen was black. The legs and feet were chalky pink. The few legs I could see (maybe two individuals) were unbanded. I detected no way to sex these birds and any differences were either individual variation or age. The occurrence of these birds fits a late spring and summer pattern to the Northeast, and many of these seem to be groups of multiple birds together. These birds were found by a party on a big day and included Rich McDonald, Rob Packie, William Nichols, David Orsmond, Ed Hawkes, and Becky Marvil, who alerted Maine birders with a posting to the listserv.
技术信息
- 型号
- Canon EOS 7D
- 镜头
- EF400mm f/5.6L USM
- ISO
- 200
- 焦距
- 400 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/9.0
- 快门速度
- 1/320 sec
- 尺寸
- 2400 pixels x 1600 pixels
- 原始文件大小
- 2.59 MB