EMSN
Nijverdal · Field journal

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NL
§ S · Species Bat

Serotine bat

Eptesicus serotinus
Detections
1,236
Days with detection
46
First
4 April 2026
Highest confidence
100%
§ S · 02 Through the year
Jan
Feb
Mar
Apr
158
May
1,044
Jun
34
Jul
Aug
Sep
Oct
Nov
Dec
§ S · 03 When during the day
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§ S · 05 Sonar properties
Peak frequency
31.0 kHz
average across all passes
Range
17.7 – 43.5 kHz
lowest and highest peak
Duration
0.10 s
average call length
Detector mix
batdetect21,027
bavaria209