ML618528750
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Деталі спостереження
After initially eyeing the singing PLVI in the same tree, I noticed the typical slower vireo foraging movements of this bird to the right, and initially the clean white throat really grabbed my attention from underneath with a good sharp contrast to head/hood color and clean borders to that . Getting a profile view a couple of seconds later showed an extensive and bright, lime green color along flanks. Bird eventually turned and showed a green mantle as well. All of this against a slate- or blue-gray head. Throat border looked really well defined relative to the head. Cassin's obviously the more likely bird, but I have not seen a CAVI with this type of contrast to the head & throat, or this well defined of a throat border, nor this bright overall. The CAVIs seem to have a duller green appearance overall and more uniform over the entirety of the upper parts, while having sort of dingy throat that doesn't show the "clean" borders that this bird showed. Cassin's do seem quite a bit more scarce in spring (BHVI scare anytime in NM, but especially in spring as well). Photos (and live view through bins) also show a pretty good contrast between the green colors above and the blue-gray color of head. Head color shows a sharp contrast against the white spectacles, and any of the white underneath.
Технічна інформація
- Модель
- NIKON D850
- Об'єктив
- 500.0 mm f/5.6
- ISO
- 720
- Фокусна відстань
- 500 mm
- Спалах
- Flash did not fire
- f-stop
- f/8.0
- Витримка
- 1/320 sec
- Розміри
- 2257 pixels x 1502 pixels
- Розмір вихідного файлу
- 1.93 MB