ML 47699

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Northern Saw-whet Owl -- Aegolius acadicus More
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1 Adult  

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Great Horned Owl -- Bubo virginianus

David S Herr
25 Feb 1990 at 04:00

    Geography
  • United States
    Washington
    Walla Walla County
    Locality
  • 39.0 km N of Walla Walla; Mud Creek
    Latitude/Longitude
  • 46.1166667   -118.1
    Habitats
  • Stream
  • Forest
  • Coniferous Forest
  • Riparian
    Features
  • Scrub
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • MARANTZ PMD 221
    Microphones
  • Sennheiser ME 20
    Accessories
  • Parabola 76.2cm (30in)
    Equipment Note

NOTES: (Frequent) Other behavior: Territorial defense? Other behavior: Territorial defense? Other behavior: Territorial defense? (Cyclic wet-dry climate) Other behavior: Territorial defense? (Winter) Other behavior: Territorial defense? Other behavior: Territorial defense? Other behavior: Territorial defense? Other behavior: Territorial defense? Other behavior: Territorial defense? NOTES ON DATA FORM: Several cuts of same bird. Heard this bird calling previous night but could not get to it. Returned this morning and played taped calls. These recordings are of response.

ML Notes: The call heard is likely to be the advertising call, described in the BNA as a monotonous series of whistled notes on a constant pitch. At some point, the notes are repeated at a much faster rate. This often occurs in response to playback. CZ 07/01/2004.

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