Opportunistic sightings

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  • Point count survey

    A method for sampling birds that typically involves one of more observers standing at a point in space marking observations of birds detected by sight and sound over a period of time. Detection times are often subdivided into 3, 5 and 10 minutes blocks. An estimate of distance between the observer...
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    A transect is a path along which one records and counts occurrences of the phenomena of study (e.g. plants noting each instance). It requires an observer to move along a fixed path and to count occurrences along the path and, at the same time, obtain the distance of the object from the path. This...

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