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Default_user
almost 5 years ago in ABD000b5mg

#Frequency-modulated #searching-call sequence. Possibly a Pipistrellus species. Also 'car-alarm' #insect-call sequence and #mechanical-noise

Default_user
almost 5 years ago in ABD000bxsi

#qcf call at the start and a #frequency-modulated call at the end, two bats or a changing searching pattern from one.

Default_user
almost 5 years ago in ABD000c062

2 sequences of #searching-call. The upper sequence is more #frequency-modulated, with the lower sequence more #quasi-constant-frequency...

Default_user
almost 5 years ago in ABD000b4h8

#frequency-modulated #searching-call x3 with harmonics. Very clear but slightly overloaded.

Default_user
almost 5 years ago in ABD000c029

An overloaded #Frequency-modulated #searching-call with harmonic amongst the #mechanical-noise

Default_user
almost 5 years ago in ABD000b5r3

... and, in between, #frequency-modulated searching calls. Definitely two different species. Nice find!

Default_user
almost 5 years ago in ABD000a2lg

That's a good find. I believe that some bat species can switch between #Frequency-modulated (FM) & #Constant-frequency (CF) pulses, such...