Accuracy and efficiency of different techniques for censusing territorial Middle Spotted Woodpeckers Dendrocopos medius

Middle Spotted Woodpecker (Dendrocopos medius) Science Article 3

abstract

The aim of the study was to test whether the methods using the playback technique produce accuratedata of population size when compared to the standard mapping and nest-searching methods. The three-visitmethod with audio-stimulation was found to produce data of the same accuracy (100%, n = 11 territories) as thestandard mapping method, but the nest-searching method and single-visit with audio-stimulation yielded slightlylower estimates, 91% and 82% respectively, in comparison to the previously mentioned methods. However, thethree-visit method with audio-stimulation was 2.2 times less time consuming than the five visits which used thestandard mapping method (9h vs 20h). The three-visit method with audio stimulation could be appropriate forassessing distribution and abundance, and also for monitoring purposes.

Kosinski Z., Kempa M., Hybsz R, Acta Ornithol. 39: 29-34

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