ML124309381
Tundra Swan (Whistling x Bewick's) Cygnus columbianus columbianus x bewickii
Kullanıcı
Tarih
Konum
- Yaş
- Belirtilmemiş
- Cinsiyet
- Belirtilmemiş
Gözlem detayları
Bewick's or intergrade? For years now I've been seeing these Tundra Swans annually near Great Salt Lake that show extensive yellow. After further research they appear to be outside the expected norm for Whistling Swans and must have some Bewick's genes involved. This particular individual may actually be a full Bewick's as it does have a yellow orbital ring, fully yellow lores with some yellow at the base of the culmen, a more deeper yellow tone, and more oval less jagged shape to the yellow spot. Compare: See https://sora.unm.edu/sites/default/files/journals/auk/v097n04/p0697-p0703.pdf?fbclid=IwAR1XouNHsR8BdHu8C15ve8887iF3xo_PsfNGNPp5koK131929iBHV2Tvy1U and https://www.dutchbirding.nl/journal/pdf/DB_2015_37_5.pdf?fbclid=IwAR1_FS4FlYPRBDUwejiQJQ9DAWLjA-kyqkfiP0Wq5vnUTTg-e0PxywF_c6w#page=5&search=whistling
Teknik bilgiler
- Model
- Canon PowerShot SX60 HS
- ISO
- 100
- Odak uzunluğu
- 247 mm
- Flaş
- Flash did not fire, auto
- Diyafram açıklığı
- f/6.5
- Shutter hızı
- 1/800 sec
- Ebatlar
- 4608 pixels x 3456 pixels
- Orijinal dosya boyutu
- 2.67 MB