Long-term Bat Monitoring, McNary National Wildlife, 2017

The Pettersson D500x detector was mounted permanently on the photo blind adjacent at Slough 4 on McNary National Wildlife Refuge and the microphone was 3 meters above ground level.

Detector settings were: Frequency = 500; Pretrigger = OFF, File Length = 5 seconds; Input Gain = 80; Trigger Level = 120; Interval = 0.

Files were processed with SonoBat 4.2. They were scrubbed with the high-grade scrubber, then batch analyzed using the Washington East Filter. Default settings include: Max # of calls to consider per file = 16, acceptable call quality = 0.80, sqnc decision threshold = 0.90. Filter settings were 5 kHz and autofilter.

A small number of files were vetted by hand. Vetting was conducted to verify species presence for each calendar month, and to double-check identification of species suspected to be out of range or uncommon species in the dataset.

For calls that were not vetted, the SppAccp column from SonoBat was used for species identification. If the consensus column was blank, calls were grouped by low or high frequency, based on those columns in the output file of SonoBat.

Data summarizes presented are raw output from SonoBat, with little hand-vetting of results and data should be considered raw.
The numbers included in the dataset represent number of call files collected per species per night. Nights when the detector did not operate are not included.