skraak.kiwi

2023-06-10

To: Pomona, Rona

How: By foot, raft, foot, raft, 1 day trapping too, raft, foot, campervan hitch. 2 damp non-functioning moths brought home to dry out, 5 new 1/30 project moths placed on Pomona, and Rona, 10 total.

Overview

LocationSolo_MaleSolo_FemaleDuetsIndividualFalse_Positives
F09434465258414
C05364504350026
N20287634744450
D0921142232995
G05244111328111
M04126534326516
H04101222116524
D03967111256
NB14652149422
N1450050
TOTAL19333152572762174

Calls per Hour

locationmalefemaleduetindividual
F090.81960.16530.08770.9849
C050.68630.15680.07250.8431
N200.56320.18550.07930.7487
D090.39460.10960.03880.5042
G050.43340.04050.02190.4739
M040.2850.16190.07250.4469
H040.20570.07250.03540.2782
D030.18380.03090.01890.2147
NB140.11640.04220.00670.1586
N140.02750.00.00.0275
TOTAL0.37160.09650.04340.4681

Changes

Female Calls per Hour


Male Calls per Hour

Newsletter

2023-06-27

I was on Pomona and Rona around the 10th or 12th of June, after the bad May weather ended.

From 10 moth recorders 2766 kiwi calls were detected. 258 duets, 316 solo female calls, 1934 solo male calls. Best of all only 175 false positives, 7%.

I had to bring home the moths at F09 and G05 as they were giving an error code, having dried out they are ready to go out again soon.

5 new moths were placed on Pomona, recording 1 minute in 30, 24/7.

5 new moths were placed on Rona, also recording 1 minute in 30, 24/7.

In theory the batteries will last a year. I plan to refresh the sd cards in the summer to check it is all good. The plan is to train a model to recognise more birds than just kiwi, they should provide a more accurate version of the 5 minute bird count, at least. Over a long period it should be a valuable and informative dataset.

The Hollyford Conservation Trust has agreed to let me place 5 new moths there, also recording on the 1/30 schedule. Can’t wait to get down there. I have my eye on the McKenzie Lagoon. (Ideal habitat for Haast Kiwi, perhaps one day, if the right people can agree. For them to grow and survive long term we need to get them the best habitats with well organised and motivated predator control.)

The skraak.kiwi website has not been updated, it is proving difficult to update and maintain. I need to make a better plan, perhaps as simple as a pdf report published to the website, thinking still.

The weather was pretty poor during the recording period, with a lot of noise and feint or distant sounding audio. Birds from the dawn chorus were not a problem. No Kaka found, some Kea from time to time.

Audio

Subscribe to newsletter.

Next

Skraak on Github
Subscribe to the Pomona Kiwi Newsletter
Thanks to the Pomona Island Charitable Trust
Supported by Fiordland Packs

CC BY-SA 4.0 David Cary. Last modified: July 30, 2023.