skraak.kiwi

2022-10-08

To: Pomona

How: By boat in and out thanks to Pomona Trust and Nick Key of Adventure Kayak and Cruise.

Overview

LocationSolo_MaleSolo_FemaleDuetsIndividualFalse_PositivesCloseLow_Noise
F093884882600653589
C0536869725816648138
D093095627419723480
N2016636493005953104
WB091982420848632
M04138309186862754
WD0514516158491951
H041026912659927
D0361301311762515
S13T464214116161123
K09452707229716
E074712528511
KS06311504661812
N14160016424
T10120114500
A1140042001
J1121032601
TOTAL20783642883018735269658

Calls per Hour

locationmalefemaleduetindividual
N200.85660.33860.19521.1952
F090.80760.22340.14091.031
C050.7420.23780.12140.9798
D090.56660.140.04550.7066
S13T0.20690.19310.04830.4
WB090.34060.01010.00670.3507
M040.24790.06580.01520.3137
K090.180.1080.00.288
WD050.25460.01180.01010.2664
H040.18720.02530.01520.2125
D030.12710.07390.02230.201
KS060.10650.05150.00.158
E070.08260.00510.00340.0877
T100.05260.0040.0040.0566
N140.0550.00.00.055
A110.01560.00.00.0156
J110.00460.00230.00.0069
TOTAL0.28440.08770.0370.372

Changes

Female Calls per Hour


Male Calls per Hour

Newsletter

2022-12-06

I finally finished labelling data from my last trip 2 months ago, its been a marathon. Hoping to go to Pomona again next week to collect the latest data.

Notebook at skraak.kiwi

H15, WB09, WD05 no detections. J11 only one detection. I think this is possibly because the Kiwi are less mobile as they may have been incubating eggs. Locations with lots of detections for this period may be the home base of breeding pairs.

New active pair at KS06 New active pair at S13T

F09 is very active and I now have almost as much data from them as I do from C05. The pair at N20 make a lot of noise and so do the frogs, which makes it a challenging location.

D03 male seems to have paired up but not certain, need more data.

Kaka heard at M04 twice, and once at S13T. Please stay kaka.

Next trip I am going to do a big reorganisation, the core moths will remain but there are some new places that need exploring, gaps to fill in.

Last week I attended an online audiomoth conference, and learned some stuff that can help me to move forward.

I have discovered opensoundscape.org. They have written many bioacoustic primitives I can use.

I learned that the audiomoths save the temperature in the metadata of their files. I rewrote my code and now my data includes temperature, battery voltage, time zone, moth ID.

My data now also makes it easier to write labels in a format compatible with Raven Pro, a commercial package from Cornell University. I need my labels in this format to be able to use opensoundscape.

Soon I will take a look at how call behaviour relates to temperature.

Battery voltage and moth ID can help to track down the cause of noise, I will be able to exclude noisy data automatically to some extent, where required. Moths get noisy when the battery is flat, and some are noisier than others.

Time zone info is just a good check to make sure my data is consistent.

My next steps: Move the thousands of 15 minute files with kiwi calls, and their labels into one place. Chop up those files into labelled 5 second wav files. Train a binary classifier with more than 1 million 224px square images, kiwi/noise. Lack of data is not a problem. The problem is now too much data. If it gets it right more than 20% of the time that will be better than AviaNZ, but 90% would be more useful. Train a model to take binary kiwi data and identify Male/Female/M&F, Close/Far so I dont have to do so much labelling, this last run I labelled calls in 1700 files, probably 2500 calls. Many hours of work.

Some random audio

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CC BY-SA 4.0 David Cary. Last modified: July 29, 2023.