ML49626791
Автор
Oliver Komar Медіа від цього автора Профіль
Дата
Локація
Lago de Yojoa--Sendero Acuático El Canal
Cortés, Honduras
Медіа з цієї локації Ілюстрований чеклист- Вік
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Деталі спостереження
A flock of 8 swifts came down to the canal to drink water as we set off in the boat, circling low over the water several times in a tight flock. Then they circled overhead briefly. Identified by shape, and speed of wingbeats. Apparently an early migrating flock heading back North from South America. the shape of these swifts is right on for Chaetura (Chimney/Vaux's) . The tails were too short and not blocky enough for Cypseloides or Streptoprocne. Wing beats were too slow for Vaux's (and Vaux's usually looks paler on throat, and also usually vocalizes, whereas these birds were silent). Thus, Chimney Swift seems to me to be the only species that fits what we saw in the field and what appears in the photo.
Технічна інформація
- Модель
- Canon PowerShot SX50 HS
- ISO
- 320
- Фокусна відстань
- 143.5 mm
- Спалах
- Flash did not fire, auto
- f-stop
- f/5.6
- Витримка
- 1/1250 sec
- Розміри
- 650 pixels x 458 pixels
- Розмір вихідного файлу
- 82.9 KB