ML387558081
Contributeur
Garrett Lau Fichiers multimédias de ce contributeur Profil
Date
Site d'observation
Don Edwards NWR--Pond A16
Santa Clara, California, United States
Fichiers multimédias de cet endroit Liste illustrée- Âge et sexe
- Femelle adulte - 1
Détails de l'observation
Female with short tuft. See photos. I've seen two hybrids (Tufted Duck x scaup) over the past two years, so I studied my photos to make sure it wasn't a hybrid. The flanks are brown, whereas a hybrid would have grayish flanks. The back is solid dark brown, darker than the flanks, whereas a hybrid's back would be lighter, with grayish barring. UPDATE: I have been informed that the part about a hybrid's back having grayish barring only applies to males. The way to identify female hybrids is to look for traits of both species. This one seems to be pure. Other Tufted Duck features seen on this bird are white undertail coverts and an S-shaped border between the dark upperparts and the flanks.
Informations techniques
- Modèle
- Canon EOS 7D Mark II
- Lentille
- EF500mm f/4L IS II USM +1.4x III
- ISO
- 1600
- Longueur focale
- 700 mm
- Flash
- Flash did not fire
- f-stop
- f/5.6
- Vitesse d'obturation
- 1/800 sec
- Dimensions
- 905 pixels x 603 pixels
- Taille originale du fichier
- 300.71 KB