ML154435001
Contributeur
Date
Site d'observation
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Boulder, Colorado, United States
Fichiers multimédias de cet endroit Liste illustrée- Âge et sexe
- Immature, sexe inconnu - X
Commentaires
I was unclear about aging this bird with the remiges and upperwing coverts, so I reached out to Peter Pyle. This is his analysis: "SY on rects alone. In this case the molt limits are mostly within the lessers and between the lesser and median coverts (so a relatively restricted PF). The small buff tips to the medians (and to some extent some of the greaters) is a juvenile thing. The 3rd or so greater from the outside has been replaced accidentally. I call those 'wear clines' from the innermost greater outward, and among the tertials, as these are the exposed feathers when the bird is sitting."
Détails de l'observation
Estimated count. Widespread, but not a lot of song, perhaps because of the overcast. See analysis of a particular robin, below.
Informations techniques
- Modèle
- Canon PowerShot SX50 HS
- ISO
- 400
- Longueur focale
- 179.8 mm
- Flash
- Flash did not fire, auto
- f-stop
- f/6.5
- Vitesse d'obturation
- 1/400 sec
- Dimensions
- 4000 pixels x 3000 pixels
- Taille originale du fichier
- 3.58 MB