Arctic Tern - Ryan Griffiths
报告

作者

日期

eBird记录 S60981639

地点

Niagara--Miller's Creek Marina
Niagara, Ontario, Canada
该地点产生的媒体文件 配图名录
地图
地图 坐标: 42.9525437, -78.9722822
年龄和性别
未成年性别未知 - 1

观察细节

Small tern, slightly smaller than common. White primaries and secondaries, faint white edging on coverts. Smaller rounded head with narrower slightly shorter bill compared to common. Carpal bar fainter than the dark bar of common. Translucent primaries with thin dark tips. Short dumpy legs when resting, shortest tern on the dock. Foraging technique noticeably different than common, very agile, would quickly flutter up and down over the surface repeatedly before making shallow dives from no more than a few feet above the surface.

技术信息

型号
NIKON D500
镜头
300.0 mm f/4.0
ISO
3200
焦距
420 mm
闪光
Flash did not fire
光圈
f/5.6
快门速度
1/800 sec
尺寸
1200 pixels x 800 pixels
原始文件大小
567.03 KB