Questions tagged [bird]

Questions related to collecting, analyzing & interpreting bird vocalizations; best practices in ornithology for bioacoustics (hardware, software & otherwise)

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17 votes
1 answer

Differences/similarities between BirdNET and Merlin

I am relatively new to the bird bioacoustics world (I'm a primatologist by trade but starting a side project with bird vocals from passive acoustic data I've got from Madagascar) and was a bit ...
  • 3,320
11 votes
2 answers

Pros and cons directional mic vs parabola

While searching through the bird song literature, I realized there are two schools for recording songs. Some people use a directional microphone and some people use a parabola. I was wondering why to ...
  • 892
12 votes
1 answer

Bird call/song adjustment to the physical environment

Do birds alter their calls/songs when they are in open areas vs in closed areas (e.g., grassland vs forest)? This kind of habitat based response is seen a lot in active sensing animals (bats emit ...
  • 4,000
20 votes
4 answers

Is it cruel/unethical to playback bird sounds to birds in my yard?

I am an underwater acoustician…so am very not up to speed with the bird acoustics world. However, I started enjoying bird watching in my back yard at the start of the pandemic. I use the Merlin app to ...
  • 3,179
23 votes
7 answers

Best methods to categorize calls

I have a dateset of many call types from one species and I would like to categorize the call types. I know I have a few different options, but statistically I was wondering what would be the best ...
16 votes
2 answers

Should we just trash files with audio saturation/clipping?

I need to conduct some soundscape analysis collected in bird colonies on remote islets. Seabirds are loud! I end up with files with regular audio saturation/clipping. The waveform is pretty obvious. ...
  • 1,422
14 votes
6 answers

Estimating distance accurately in the field for bird call source levels?

I'd like to estimate the distance at which the bird is singing from the point of recording, to then finally get the source level from one microphone. I've seen studies, and heard from colleagues use ...
  • 4,000
12 votes
2 answers

Where are BirdNET saved observation sound snippets saved on an iPhone?

I've recorded some sounds using the app BirdNET ( and would like to share/export some of the recorded observations I made and saved. I cannot find them within my iPhone's ...
  • 3,179
16 votes
2 answers

Data augmentation strategies for bioacoustics machine learning

When training a Neural Network for bioacoustics classification tasks I usually follow a data augmentation pipeline which is composed of: Changes in sound to noise ratio: for instance, if my sound ...
8 votes
1 answer

Does the type of bird call significantly effect localization

I initially became interested in the idea of acoustically tracking birds when in San Diego where there are a lot of wild parrots. Their calls are very impulsive, and combined with how loud the birds ...
9 votes
2 answers

Do common swifts (Apus apus) echolocate?

I'm seeing and hearing a lot of activity of common swifts (Apus apus) here in Europe, and the flight and call behaviour reminds me a lot of echolocating bats hunting insects. (The call has strong high-...
  • 1,664