American Robin

Turdus migratorius

ML154435001



eBird Checklist S55476303
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Boulder, Colorado, United States
Search this location, Illustrated Checklist
Latitude and Longitude 40.0443, -105.1868 Map

Age
Immature
Sex
Unknown
Behaviors
Breeding
Tags

Comments

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."

Observation details

Estimated count. Widespread, but not a lot of song, perhaps because of the overcast. See analysis of a particular robin, below.

Technical Information

Model
Canon PowerShot SX50 HS
f-stop
f/6.5
Focal length
179.8 mm
Shutter speed
1/400 sec
ISO
400
Flash
Flash did not fire, auto
Original file size
3,752KB
Dimensions
4000 x 3000

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