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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. R

    Question about Bird Song Frequencies

    While searching for a list of bird song frequencies, I came across this statement: “The Canada Goose has a fairly large vocal range, of 500-850 hz, and there is little discernible difference between the subspecies (Whitford 1998).”...
  2. R

    Help with odd noise in recordings

    I have attached a screen shot of a spectrogram that shows an odd noise that was generated by my equipment. The noise spans all frequencies and must be caused by my mic, cable, or recorder. On different days, I have swapped cables and swapped recorders, so I believe the noise is created by the...
  3. R

    Should one first normalize the entire soundtrack or clip and normalize individual bird songs?

    Greetings, All! I have recently taken up recording the birds in my yard using Merlin Bird ID. I transfer the resulting .wav files to my Mac where I am learning to use OcenAudio. Suppose I have a five-minute soundtrack that contains three or four good bird songs dispersed throughout the...
  4. R

    Greetings!

    What a great forum! I've been away from birding for about thirty-five years and am easing back into it. In the 80's, all one had was a Peterson field guide and binoculars. Today, wow - Merlin Bird ID on an iPhone, eBird, and bird's eye autofocus cameras. I'm particularly interested in...
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