Beitragende/r
Rob Fowler Medien dieser/s Beitragenden Profil
Datum
Ort
Arcata Marsh--Oxidation Ponds
Humboldt, California, United States
Medien von diesem Ort Illustrierte Checkliste- Alter und Geschlecht
- adultes Weibchen - 1; adultes Männchen - 1
Kommentare
In this photo you can see that the wingbar is clearly broader than the trailing edge of the speculum. Even at this more head-on angle you can see the difference in width between the wing bar and trailing edge.
Beobachtungsdetails
Adult male with a female. Photos of female speculum clearly show a broader wingbar vs the trailing edge. According to Reeber's (2015) waterfowl book this is probably the best (only?) way to tell female crecca vs. carolinensis. I've never documented a female crecca in the US so open to suggestions from anyone with more experience.
Technische Angaben
- Modell
- Canon EOS 7D Mark II
- Objektiv
- EF400mm f/5.6L USM
- ISO
- 320
- Brennweite
- 400 mm
- Blitz
- Flash did not fire
- Blende
- f/5.6
- Belichtungszeit
- 1/3200 sec
- Abmessungen
- 1229 pixels x 819 pixels
- Größe der Originaldatei
- 569.12 KB