Boidnoise

Various nature recordings by Bernhard Kroeger

Categories

Archives

  • Recorded with Telinga dish and twin science microphone in the afternoon of January 25, 2009 at Heirman County Park in Snohomish along the Snohomish River.  This is mono only from the right channel (cardioid) of distant bald eagles calling.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • While in the Rock Creek Nature area East of Nevada  City, CA on the night of July 18, 2007, great-horned owls were active.  A juvenile was begging, and this female was squawking away.  One could easily mistake this vocalization for a noise normally protested against in social settings with a certain vehemence.  A begging juvenile can be heard faintly in the background (as always, use headphones when possible to get the subtle background sounds).

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • July 18, 2007, six minutes to three in the Sierra foothills East of Nevada City, CA, looking for owls.  The moon had set hours before, but one could see fairly well by starlight.  I was exploring an area by car and stopping every .2 miles to get out and listen for a while.  Fairly often just the dinging of the key in the ignition alarm when opening the door to get out will set off owls in an area.  At this location I listened for a while and while walking up the road started hearing this odd repetitive hissing noise coming from low out of thick cover ahead.  Not having a clue of what was the cause, I started recording.  During recording I heard a bird moving, so  figured this was a bird of some kind. The regularity and quality of the sound reminded me of an air cylinder cycling.  Thinking about this on the way home it hit me that it also sounded somewhat like someone sharpening a knife on a stone. Saw-whet owl came to mind, as one of their calls supposedly reminds somewhat of sharpening a saw.  I have yet to hear it anywhere, including the internet.  I sent a snippet of the file to Bruce Webb, a local owl expert, and was told that what I had recorded was a juvenile Northern saw-whet owl begging for food.

    The sound at 26.5 sec is the bird moving in the thick cover.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • July 23, 2007, hunting for owls above Nevada City, CA I heard this raspy, screechy noise near Rock Creek.  The time was twenty minutes before midnight.  I was perplexed by the call, but figured it might be an owl of some kind and recorded it.  Doing some research afterward I found out that this is a begging call for the great-horned owl.  Another mystery night sound solved.

    This file is 00:01:08 long and contains four calls.  Background is running water and crickets.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Here are aother four calls from the same bird in the same location 20 minutes later.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • I drove to 

    Olema Marsh before dawn on Sunday February 7, 2009 to see what birds and animals might be active in the area. Even at that time there was quite a bit of traffic on both Bear Valley Rd. and Sir Francis Drake Blvd.   Not long after light Virginia rails started vocalizing, along with marsh wrens, song sparrows, crows, ravens, jungle fowl (roosters) and others.  The recording is 00:05:39 long, and the loudest portions are the Virginia rails.  Traffic noise is present off and on.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Another segment of the Virgiania rails with a great-horned owl in the background.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • Recorded on the morning of February 8, 2009 at Limantour Beach at Point Reyes National Seashore.  Two Ravens flew into a pine and I recorded their croaky calls from a distance.  When I heard the clucking calls I moved closer and recorded almost directly under the tree.  One of the birds was quietly preening as the other was vocalizing.  There must be some bill snapping associated with making the clucking noises, as little clicking sounds can also be heard.  White-crowned sparrows can be heard in the background along with the surf over the dunes behind me.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • Chipping sparrows migrate through the foothills on the way to higher elevations in the Sierra Nevada.  On the morning of April 17, 20007 I heard what I took to be an insect of some kind, but it turned out to be a sparrow perched on the top of a young oak tree with his head and wide open bill pointed at the sky broadcasting the following enthusiastically.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    What do I consider to be

    Upper Bridgeport SP ??

    Comments Off
  • The California towhee is a common bird in our area.  Most of the year one can hear it’s sharp “pink” call, but in the spring one can hear its song. Recorded at upper Bridgeport State Park in Nevada County, CA.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • Black phoebes are flycatchers that prefer the presence of water.  They will be seen perched either high or low, dart out after an insect, and often return to the same perch.  With their toxedo clad appearance they are easy to recognize and their high pitched “ptee” call is hard to miss.  Note that this bird alternated each call ending with first an upslur and the next call with a downslur.  April 17, 2007

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off
  • Early in the morning on April 17, 2007 at the upper part of Bridgeport State Park in Nevada County, CA I heard the irritated stuttering call of a Bullock’s oriole.  It was sitting near the top of an oak tree and I got this recording of it.  The call one will hear or become aware of most often is at 22 seconds.

    Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

    Comments Off