ML168851301
Автор
Nels Nelson Медіа від цього автора Профіль
Дата
Локація
Dawson Creek Corporate Park
Washington, Oregon, United States
Медіа з цієї локації Ілюстрований чеклист- Вік і стать
- Ювенільний птах, стать невідома - X
Деталі спостереження
One of the juvenile BH Cowbirds was located close to the NE corner of the park. The other was located almost directly in front of the library, so they were obviously two different birds, being fed by different Junco parents. Interesting to see Parasitism first hand. It's amazing how hard the Juncos have to work to feed birds much larger than themselves. In neither case did I see juvenile Juncos present, which leads me to surmise that the cowbirds must have hatched first and demanded so much attention of the parents that the Junco eggs may not have hatched. However, I have no empirical evidence to back up this thought.
Технічна інформація
- Модель
- COOLPIX P900
- ISO
- 140
- Фокусна відстань
- 250 mm
- Спалах
- Flash did not fire, auto
- f-stop
- f/6.3
- Витримка
- 1/500 sec
- Розміри
- 4564 pixels x 2506 pixels
- Розмір вихідного файлу
- 4.82 MB