Redwing with a rare second lower frequency-band.. (2nd lower harmonic)

This call is special because there is no slope in tyhe sonogram..

this call is are very rare heard one. It's without modulations, but correct frequency, lenght and correct slope.

The sonogram of this call is aberrant. It probably isn't audible.

The sonogram of this call is aberrant. It probably isn't audible.

The sonogram of this call is aberrant. It probably isn't audible.

unusual flight call, sonogram shows that.

An unusual high pitched flight call

oprising call instead of a downwards call..

Nocturnal flight call

also an abberant call which reminds somewhat of an Eyebrowed Thrush.. This call goes upwards in the ending instead of going downwards. It's U-shaped.

also an abberant call which reminds somewhat of an Eyebrowed Thrush.. This call goes upwards in the ending instead of going downwards

A very low pitched Redwing..

alarm call, while flying

about a dozen individuals flying over

Recorder runs all night. No modification to recording, but 300Hzへるつ high-pass filter set on recorder.

Unusual Redwing call.

this call is are very rare heard one. It's without modulations, but correct frequency, lenght and correct slope.

Recorder runs all night - 300Hzへるつ filter but otherwise no modification to recording. I believe this to be an unusual variation of Redwing nocturnal flight call.

aberrant redwing

The twittering song in between the loud cries are also made by the Redwing.

A long serie of 'blacbirdlike' calls.