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Oroville CBC afterthoughts

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  • bigbirderscott
    After a week of checking and double checking the data here are the count totals for the Oroville CBC (Butte County) along with some observations*. Species
    Message 1 of 1 , Jan 7, 2009
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      After a week of checking and double checking the data here are the
      count totals for the Oroville CBC (Butte County) along with some
      observations*.

      Species Total: 144
      This is highest species total since the count began in 1968, the
      second highest was 140 in 1989.

      High Species Counts:
      Great blue heron: Second highest with 38. Highest in 1989 with 39
      Tundra swan: Second highest at 7,577. Highest in 1997 with 60,010
      Northern shoveler: Highest at 718, second highest was 1997 with 463
      White-tailed kite: Highest at 44, second highest was 1997 with 21
      Bald eagle: Highest with 26, second highest was 1997 with 15
      Red-shouldered hawk: Highest with 38, second highest were 2001 & 2003
      with 23
      Ferruginous hawk: Highest with 6, second highest was 1981 with 5
      Red-tailed hawk: Highest with 91, second highest 2001 with 77
      Merlin: Highest with 5, second highest was 2003 with 4
      Peregrine falcon: Tied for highest with 3 in 2001
      Sandhill crane: First time since 1988. Second highest with 12,
      highest was 1977 with 14
      Long-billed curlew: 2. Only 7th time on list since 1968
      Rock pigeon: Highest with 860, second highest 299 in 1992
      Mourning dove: Highest with 301, second highest 190 in 2006
      Great-horned owl: 3. Tied for highest with '72, '73, '85, '87 and `98
      Northern pygmy owl: 2. tied for highest with '82, '85, '89 and `97
      Short-eared owl: Second highest with 3, highest in 1978 with 10
      Anna's hummingbird: Second highest with 127. Highest was in 1971 with
      138
      Belted kingfisher: Highest at 28. Second highest was 25 in '71, '90
      and 2000
      Lewis' woodpecker: Third highest with 9. Second time in last 10
      years. Highest 27, 1976
      Nuttall's woodpecker: Highest with 39. Second highest 37 in 1978
      Black phoebe: Second highest with 107. Highest in 1996 with 143
      Say's phoebe: Highest with 14. Second highest in '77 and 2006 with 6
      Steller's jay: Second highest with 79. Highest in 1989 with 108
      Yellow-billed magpie: 44. Highest since 2003. Zero in 2005. All time
      high 158 in 1978
      American crow: Second highest with 473. Highest in 1983 with 556
      Common Raven: Highest with 35. Second highest 19 in 2005. Only 4 from
      1968-1993
      Oak titmouse: 153. Highest since 2000 (157). Low of 27 in 2005
      Bushtit: Highest with 421. Second highest 413 in 1976
      White-breasted nuthatch: 36. Tied for highest with 2000
      Brown Creeper: Missed. First time missed since 1998
      Blue-gray gnatcatcher: 1. Tied for highest with 1981 & 1985. Only
      third time on count.
      Western bluebird: Highest with 615. Second highest 292 in 1988
      Hermit thrush: Second highest with 80. Highest in 1997 with 254
      Northern mockingbird: Second highest with 133. Highest in 1996 with
      141
      Cedar waxwing: Second highest with 238. Highest in 1999 with 505
      Phainopepla: Second highest with 9. Highest in 2003 with 13
      Loggerhead shrike. Missed. Only third time missed since 1968
      Black-throated gray warbler. 2. Tied for highest with '74 & `04.
      Fifth time since'68
      Fox sparrow: Second highest with 24. Highest in 1989 with 26
      Song sparrow: Highest with 39. Second highest 38 in 1989
      Lincoln's sparrow: Highest with 65. Second highest 28 in 1974
      Tri-colored blackbird: 80. Seen in 18 counts in last 40 years.
      Highest 3605 in 2005
      Western meadowlark: Second highest with 2098. Highest 2634 in 1971
      White-faced ibis: Second highest with 510. Highest 2639 in 2006. 3rd
      time on count
      Lesser yellowlegs: Highest with 3. Second highest 1 in 2003. 2nd time
      on count
      Eurasian collared dove: 10. First time on count

      Many variables contribute to differences, including weather, number
      and skill-level of census takers, and emphasis on specific habitats
      within count zones, but clearly there are some notable trends in the
      above data.

      * not including 2007 data which I did not have access to

      Bird well,

      Scott Huber
      Compiler
      Oroville Christmas Bird Count
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