ML482616231
Laguntzailea
Scott Ray Laguntzaile honen media Profila
Data
Kokapena
Hummingbird House - Stanley Home
Mountrail, North Dakota, United States
Kokapen honetako media fitxategiak Ilustratutako zerrendak- Adina
- Zehaztu gabea
- Sexua
- Zehaztu gabea
Behaketaren xehetasunak
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.
Informazio teknikoa
- Eredua
- Canon EOS R5
- Lentea(k)
- RF800mm F11 IS STM + EXTENDER RF1.4x
- ISOa
- 20000
- Distantzia fokala
- 1120 mm
- Flasha
- Flash did not fire
- f-stop
- f/16.0
- Obturadorearen abiadura
- 1/800 sec
- Dimentsioak
- 3539 pixels x 2366 pixels
- Fitxategiaren tamaina originala
- 2.72 MB