ML68739471
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Sooty Tern over Lake Norman, Mecklenburg Co., NC
Деталі спостереження
From boat on Lake Norman. Well seen and photographed by all observers. I observed the tern starting around 6:15 pm and it was in and out of view for about 20-25 minutes, always in flight over water. Clearly a tern from shape - forked tail, long, pointed wings, long pointed bill. Dark mantle - looking blackish at a distance. Underwing showed white wing-linings but underside of primaries dark. Black cap down to eye, but with a white forehead. Bill black. Separated from Bridled Tern by more extensively dark underside of primaries, color of mantle nearly black with no discernible contrast with black cap. White on forehead not as extensive. Tail mostly blackish above. Photos should be diagnostic: Other observers obtained better photos. Also present for comparison were Black Tern and two Common Terns.
Технічна інформація
- Модель
- ILCE-6000
- Об'єктив
- E 55-210mm F4.5-6.3 OSS
- ISO
- 400
- Фокусна відстань
- 210 mm
- Спалах
- Flash did not fire, auto
- f-stop
- f/6.3
- Витримка
- 1/400 sec
- Розміри
- 702 pixels x 527 pixels
- Розмір вихідного файлу
- 119.02 KB