ML482616231
Přispěvatel
Scott Ray Média od tohoto přispěvatele Profil
Datum
Lokalita
Hummingbird House - Stanley Home
Mountrail, North Dakota, United States
Média z této lokality Rozšířený seznam druhů- Věk
- Nespecifikováno
- Pohlaví
- Nespecifikováno
Podrobnosti k pozorování
This bird first appeared yesterday and was identified as Selasphorus sp. After sifting through hundreds of photos looking for some that might show any of the published clues used to separate the two nearly identical species, Rufous and Allen's Hummingbird, I am fairly confident that this is a Rufous. Many of the field marks are extremely subtle. Allen's trademark pin-shaped R5 feather only occur in the adult male. So being an imm bird adds to the identification difficulty. I believe it is an imm male. Separating the two species is all in the tail feathers, particularly their shapes. The slight dent in the lateral vein of R2 seems to be the only diagnostic indication of a Rufous instead of Allen's at this age.
Technické informace
- Model
- Canon EOS R5
- Objektiv
- RF800mm F11 IS STM + EXTENDER RF1.4x
- ISO
- 20000
- Ohnisková vzdálenost
- 1120 mm
- Blesk
- Flash did not fire
- Clonové číslo
- f/16.0
- Expoziční čas
- 1/800 sec
- Rozměry
- 3539 pixels x 2366 pixels
- Původní velikost souboru
- 2.72 MB