ML646882001
Collaboratore
David Dowell Contenuti multimediali da questo collaboratore
Data
Località
South Platte River--88th Ave area
Adams, Colorado, United States
Contenuti multimediali da questa località Checklist illustrata- Età
- Non specificato
- Sesso
- Non specificato
Dettagli dell'osservazione
Largest gull present among an assortment of gulls on the ice that included at times over a dozen Herring Gulls. Relatively short primaries. Short, stout bill. Dark eye. Folded primaries tan with pale edges. In flight, grayish brown tail band apparent. Color patterns on the pale wings seemingly good for GWGU, with darkest color confined to the edges and the tips of the outer primaries. Second winter characteristics with smudgy appearance overall, some gray scapulars, and bicolored bill (without sharp demarcation). Thayer's Gull ruled out by overall size and stout bill. Herring Gull hybrids (including Glaucous-winged and Glaucous) would have more uniform color on outer primaries, darker secondaries, and also (probably) a paler eye.
Informazioni tecniche
- Modello
- Canon PowerShot SX60 HS
- ISO
- 100
- Lunghezza focale
- 247 mm
- Flash
- Flash did not fire
- f-stop
- f/6.5
- Velocità otturaore
- 1/640 sec
- Dimensioni
- 2090 pixels x 1180 pixels
- Dimensione originale file
- 704.44 KB