Checklist S27193687

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Owner Kelley Nunn

Stationary
  • 1

Observations

  1. Number observed: 2000
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  2. Number observed: 750

    Details: Estimation based on how many I was seeing in proportion to RBGUs.

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  3. Number observed: 1

    Details: Dark-winged Kumlien's Gull originally thought to be possible Thayer's Gull.

    The bird was foraging atop the hillside with a pair of adult GBBGs and some adult Herring Gulls, which were slightly larger. With wings folded, the primary feather coloration was evidently different from surrounding HERGs. Streaks across face and head forming a hooded appearance.

    Three species come to mind when trying to identify this gull based on plumage, leg color, size, etc.-- Herring Gull, Thayer's Gull, and dark-winged Kumlien's gull. Oddly-colored HERG can be ruled out by overall size plus bill size/shape. In partially open-winged photo, can count out 4 dark primaries, which also puts this gull within the THGU/Kumlien's category; however, dark primaries appear to be dark gray, rather than black, ruling out THGU and pointing to dark-winged Kumlien's gull. Pale pink legs as opposed to bright pink seen in adult THGU also indicate dark-winged ICGU (Kumlien's).

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  4. Number observed: 8

    Details: Numerous individuals-- I came to a total of 8 by counting 4 birds along the hillside where I was parked (2 adults, one immature, and one subadult) plus another 4 birds throughout the fill area. The images attached to this checklist show different birds (differentiated by the amount of streaking on their heads, bill coloration, etc.) Pretty cool to see the variation between individuals!

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male
    Female
    Sex Unknown 3 5
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  5. Number observed: 11

    Details: Counted 4 adults, plus 1 subadult and another immature bird on the hillside. As the Bald Eagle flushed up the rest of the birds from the fill area, I counted another 4 adults and 1 immature fleeing in my direction.

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male
    Female
    Sex Unknown 4 7
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  6. gull sp.

    Number observed: 2

    Details: Loafing on hillside marked 'HILL' in Google Maps image attached to the checklist. Another bird is possibly a strangely-colored RBGU, which I've seen a few months ago at this location and grabbed a photo of.

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  7. Number observed: 13
  8. Number observed: 6
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  9. Number observed: 1

    Details: Adult, flushed all of the gulls off the hillside and entire fill area several times. Took 20-30 minutes for the birds to settle back down again.

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male
    Female
    Sex Unknown 1
  10. Number observed: 1

    Details: Adult, also flushed the gulls, though not as far as the eagle did.

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male
    Female
    Sex Unknown 1
  11. Number observed: 1

    Details: Heard.

  12. Number observed: 40
  13. Number observed: 450
  14. Number observed: 1

    Details: Heard.

  15. Number observed: 25
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