ML85673591
Contribuidor
Shai Mitra Mídias deste contribuidor Perfil
Data
Local
Heckscher SP, East Islip
Suffolk, New York, United States
Mídias desta localidade Lista Ilustrada- Idade
- Não especificado
- Sexo
- Não especificado
Detalhes da observação
a very rough and highly conservative estimate based on sampling of birds close enough to identify easily. In about 20 rough samples of 100 or so birds, I only failed to find any LESC on one or two occasions, whereas the proportion of LESC was above 5% on more than half and close to 10% on a few. These samples were taken at widely varying places within a relatively near flock of ca. 10,000, yielding an estimate of ca. 500 LESC for this flock alone. I did not extrapolate this proportion to the more distant flocks without direct evidence that these contained comparable numbers of LESC, but I would be surprised if they did not. Thus it is likely that 2000-3000 LESC were present. Several LESC visible in each photo.
Informação técnica
- Modelo
- Canon PowerShot S90
- ISO
- 80
- Distância focal
- 6 mm
- Flash
- Flash did not fire, auto
- f-stop
- f/4.0
- Velocidade do obturador
- 0.01 sec
- Dimensões
- 2653 pixels x 1591 pixels
- Tamanho original do arquivo
- 763.55 KB