Greater Sand-Plover - Parthasarathy Gopalan
报告

作者

Parthasarathy Gopalan 该用户提供的媒体文件 档案

日期

eBird记录 S78693214

地点

Garacharma Wetlands
South Andaman, Andaman and Nicobar Islands, India
该地点产生的媒体文件 配图名录
地图
地图 坐标: 11.6183, 92.7063
年龄
未说明
性别
未说明

观察细节

It was fairly straightforward on this occasion to identify both the sand plovers as they were seen in the same location. The Greater Sand Plovers were relatively larger, stockier, with a more squarish head and a flatter crown. The bill was longer, heavier and tapered to a point. The bill length appeared to be more than the distance between the base of the bill to the rear of the eye in GSP.. The legs appeared longer and were much lighter green in colour than the Lesser's. The Tibio-tarsal ratio in the GSP was more than that in the LSP. The stance of the bird was rather more horizontal, compared to the LSP. After reviewing the images on the computer, the Tarsus: Bill Length ratio of the GSP was around 1.6 whereas that of the LSP was uniformly closer to 1.8-2.0. The calls of the two species were also slightly different.

技术信息

型号
Canon EOS REBEL T5i
ISO
250
焦距
600 mm
闪光
Flash did not fire
光圈
f/6.3
快门速度
1/1000 sec
尺寸
1322 pixels x 841 pixels
原始文件大小
253.4 KB