Natterer's Bat
| Recordings made in West Norfolk just north of King's Lynn, 20 April 2002, 9:00pm |
| heterodyne 50kHz recording (53k) |
|
Sonogram
|
|
Spectrum
|
Natterer's Bat
| Recordings made in West Norfolk just north of King's Lynn, 20 April 2002, 9:00pm |
| heterodyne 50kHz recording (53k) |
|
Sonogram
|
|
Spectrum
|