Yellow-bellied Sapsucker

Sphyrapicus varius

ML189583181


©
Andrew Newmark
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eBird Checklist S61163812
Balboa Park--west side
San Diego, California, United States
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Latitude and Longitude 32.7314, -117.158 Map

Age
Not specified
Sex
Not specified
Behaviors
Breeding
Tags

Media notes

Observation details

I've been struggling with this ID since we found the bird. I asked the ABA Bird ID facebook group for help and they are leaning Yellow-bellied based on the following indicators, with an emphasis on the molt timing: strong white band along wing parallel with the belly, dark chest and head, as well as appearing to have quite a bit of retained juvenile plumage, which Red-naped Sapsucker should not show after mid-Oct, as they complete their molts on summer grounds and look like adults by Fall's end. This bird is a strong example of a YBSA juvenile in "suspended molt" during its winter migration, further evidenced by the crown molting in a splotchy manner, whereas RNSA molt their crown from front to back.

Technical Information

Model
NIKON D500
Lens model
500.0 mm f/5.6
f-stop
f/6.3
Focal length
500 mm
Shutter speed
1/500 sec
ISO
1000
Flash
Flash did not fire
Original file size
430KB
Dimensions
1664 x 1109

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