ML20942981
Colaborador
David Dowell Média deste colaborador
Data
Localização
Boulder Reservoir complex--Boulder Reservoir
Boulder, Colorado, United States
Média deste local Lista Ilustrada- Idade
- Não especificado
- Sexo
- Não especificado
Detalhes da observação
Juvenile, found by Peter Burke. Tern sp. noticeably smaller than Bonaparte's Gulls. Quick moves during flight, up and down, often rolling over sideways, and occasionally diving. Uppersides of wings very pale gray except for medium gray carpal bar and medium gray primary tips. White secondaries. Undersides of wings appeared entirely white through scope, but one photo shows a very thin dark edge on the primaries. Short bill. Possibly some red/orange color seen at the base of the otherwise black bill, but I can't be sure. Tail forked but short, characteristic of juvenile.
Informação técnica
- Modelo
- Canon PowerShot SX40 HS
- ISO
- 160
- Distancia focal
- 150.5 mm
- Flash
- Flash did not fire, auto
- f-stop
- f/5.8
- Velocidade do obturador
- 1/1000 sec
- Dimensões
- 967 pixels x 641 pixels
- Tamanho do ficheiro original
- 166.39 KB