ML408964731
作者
日期
地点
- 年龄和性别
- 未成年雄鸟 - 1
媒体文件注释
Apparent immature male Eurasian Wigeon photographed by Curtis A. Marantz on 12 January 2022 on the Salton Sea from the mouth of Salt Creek, Salton Sea State Recreation Area, Riverside COunty, California. This bird had been seen earlier in the winter by Bob McKernan, but I do not know the span of dates over which it had been seen prior to our visit today.
观察细节
Relative soon after I began scoping the ducks carefully, I spotted what was apparently a continuing, immature male Eurasian Wigeon among the many American Wigeon that were on the water just off the creek mouth. Although this bird was along the near edge of the flock, and not all that far from us, when we first saw it, the light was from the side and less than ideal. I again spotted this bird late in our visit, but it was near the far edge of the flock, albeit in better light, when we saw it the second time, when I was able to get a few rather poor, yet identifiable, photos. I saw this bird exclusively as it swam at the surface and briefly sleeping with its head tucked, so I never saw the spread wings. Despite its somewhat different coloration, this bird was similar in size and shape to the many American Wigeon with which it was associated. This bird had a relatively short bill that was stout from the base to a blunt tip, and one that would have extended backward on the face to a point near the rear edge of the auriculars. The forehead was relatively steep, and the crown was strongly rounded to the point of having a somewhat domed appearance, all on a head that was unremarkable in size for a dabbling duck. The neck was short and inconspicuous, likely in part because it was retracted on a bird that was usually resting and never all that alert. The body was plump, full-chested, and seemingly riding relatively high on the water. Given the distances involved and the fact that I never saw this bird with its wings spread, I was unable to discern any real details of the wing structure, and even though I noted that the tail was short and that it was cocked upward showing the undertail coverts, I was unable to determine either its length relative to the body or its shape. I saw this bird exclusively as it sat at the surface without ever flying, preening, or flapping its wings, so I never saw the belly, legs, or feet. This bird’s patterns were not unlike those of the American Wigeon, but its coloration was more like the male Redhead than the wigeon. The forehead from the base of the bill up to the peak of the crown, and maybe a little beyond, was a deep butter-yellow to yellowish-buff in color, but the rest of the head was a deep rufous to rufous-chestnut that was not unlike the color of the head of the male Redheads, but maybe slightly duller and darker. There may have been a little darkening around the eye, but this bird lacked any real indication of the green blaze of an American Wigeon that can apparently even be shown by some Eurasian Wigeon and most hybrids. I was not sure about the color of the neck, but it did not seem to contrast conspicuously with the head or breast. I thought this bird’s breast and sides were a deep, rufous-chestnut in color, and therefore more the color I associate with a young male than the more purely pink color with dark speckling that I think is typical of an adult male. This said, given the distance and light, I may not have been able to see fine, dark markings on the breast. Similarly, given the distance, this bird’s upperparts, wings, and flanks appeared to be medium-gray with a somewhat uneven appearance to the upperparts, rather than the finely vermiculated pattern that is visible at close range. I further thought the scapulars or maybe also parts of the closed wings may have showed some contrast between darker inner-webs and lighter outer-webs, but given the distances and light, I was able to see this only as an uneven appearance rather than an actual pattern. I never did see any suggestion of the large, white panel on the upperside of the wing that characterizes an adult male of this species, which when combined with the seemingly rufous-chestnut breast, and what seemed like rather dingy upperparts, is probably indicative of this being a first0winter male rather than an adult. I was even more confident that the tertials and whatever remiges were evident in the outer part of the closed wing showed some contrast between darker and lighter centers and edges to create some suggestion of a striped pattern. The flanks appeared to be medium-gray from the rufous-chestnut at the side of the breast back to a white patch on the rear flanks that was like that of the American Wigeon, and like the other male wigeon, this bird also had black undertail-coverts, but I was unsure about the color or pattern on the tail. Like the other wigeon, this bird had a light, bluish-gray bill with a sharply demarcated black tip. I thought the eyes were dark, but I did not see them overly well, and as noted above, I never saw this bird’s legs or feet.
额外物种
技术信息
- 型号
- Canon EOS 7D Mark II
- 镜头
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 320
- 焦距
- 400 mm
- 闪光
- Flash did not fire
- 光圈
- f/6.3
- 快门速度
- 1/1250 sec
- 尺寸
- 1468 pixels x 1006 pixels
- 原始文件大小
- 1.49 MB