Checklist S11567335

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Nocturnal

Owner Andrew Farnsworth

Stationary
  • 11
Checklist Comments

Monitoring at the 11 September Tribute in Light memorial. 2000 birds present, at least, though estimates challenging. Conservative numbers reported in this list, despite the presence of many more birds and much flight calling, at times. Winds were light and southerly, at different periods of the night, sky clear, temperature presumably in the upper 60s.

Observations

  1. Number observed: 11
  2. duck sp.

    Number observed: 2
  3. Number observed: 5

    Details: A small flock of birds were displaced when one of the bulbs exploded in the TiL lights.

  4. Coccyzus sp.

    Number observed: 3

    Details: Three high flying birds at different times during the evening.

  5. rail/crake sp.

    Number observed: 1

    Details: Presumably a Sora, a high flying bird in the beams that circled several times and then disappeared.

  6. Number observed: 1

    Details: Single young bird flying around the beams, apparently catching large insects.

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male
    Female
    Sex Unknown 1
  7. Number observed: 3

    Details: Three different birds, presumably, at different altitudes, seen well in the beams of light.

  8. Number observed: 1

    Details: Capturing birds in trapped in the beams. At least 5 warblers grabbed!

  9. vireo sp.

    Number observed: 3

    Details: Probably Red-eyed Vireo but never seen well.

  10. Number observed: 2
  11. Number observed: 3
  12. Number observed: 9
  13. Number observed: 11
  14. Number observed: 4
  15. Number observed: 3
  16. sparrow sp.

    Number observed: 4

    Details: Probably Chipping Sparrow, but could not catch up with these birds to confirm IDs. Also, did not hear any flight calls for this species.

  17. Number observed: 2

    Details: Two individuals flying together in the beams for at least 10 minutes.

  18. Number observed: 21

    Details: Many flight calls evident. Probably an underestimate given the numbers of unidentifiable birds relative to the amount of flight calling occurring.

  19. Number observed: 9
  20. Number observed: 11

    Details: Several close passes by this species, including close, flight calling birds.

  21. Number observed: 16
  22. Number observed: 43

    Details: Underestimate - many adults and young birds flying at heights to easily identify the birds. Also, much flight calling by this species.

  23. Number observed: 11

    Details: Underestimate - flight calls apparent, and many small bodied warblers that were probably this species that were too high to identify.

  24. Number observed: 19

    Details: Males, females, young birds - some relatively close study of birds flying at heights no greater than 4-5 meters above the parking deck. Several birds appeared to land on adjacent buildings, though I could never confirm this.

  25. Number observed: 5
  26. Number observed: 4

    Details: Low birds giving flight calls and seen well. Clearly an underestimate, I presume, given the wealth of additional zeep calls in the din before lights were extinguished.

  27. Number observed: 8

    Details: Underestimate. More calls for this species heard than individuals seen. However, males did stand out like a sore thumb in the lights, so perhaps additional birds were non-male and faded into obscurity at heights at which they were unidentifiable.

    Age & Sex:
    Juvenile Immature Adult Age Unknown
    Male 5
    Female
    Sex Unknown 3
  28. Number observed: 3
  29. Number observed: 4

    Details: Several low birds seen well. Additional flight calls heard.

  30. Number observed: 1

    Details: At least one, flight calling and reasonably low bird.

  31. warbler sp. (Parulidae sp.)

    Number observed: 1800

    Details: Conservative estimate given the presence of birds at many altitudes out to beyond the range of aided sight. Circling in these birds was at times dramatic, like a small snow squall. Occasionally, some individuals would bomb down from above to within a few feet of the lights. As far as anyone could ascertain, no mortality occurred among all of these birds. Much might be clearer upon review of recordings.

  32. Number observed: 3

    Details: A single very close pass by a bird over the lights startled several - I suspect that this individual did this several times during the event.

  33. Number observed: 8

    Details: Probably a woefully inadequate estimate given flight calls occurring at the site.

  34. Number observed: 3

    Details: Probably more given the number of flight calls.

  35. passerine sp.

    Number observed: 100

    Details: Probably a conservative estimate of birds "trapped" and circling in the beams during the period of observation. Most of these were probably warblers, but other species were likely present as well.