skraak.kiwi

2022-08-27

To: Pomona

How: By bicycle, foot, packraft, boat home after trap check thanks to Pomona Trust. 15 moths checked and 3 extra placed out.

Overview

LocationSolo_MaleSolo_FemaleDuetsIndividualFalse_Positives
F09230222630448
C05199572330267
D09175562828710
WB091846820647
D031875319825
H04107372519428
T1094241915613
M048241513330
N148812711423
WD05972711326
J115414108819
S13T46196779
K0912114318
E072720292
H1511121615
TOTAL15933091732248370

Calls per Hour

locationmalefemaleduetindividual
T100.44840.17060.07540.619
F090.43170.08090.04380.5126
C050.37440.13490.03880.5093
D090.34230.14170.04720.484
N140.3310.06620.02440.3972
WB090.32380.02360.01350.3474
D030.32040.01350.00510.3339
H040.22260.10460.04220.3272
S13T0.17870.08590.02060.2646
M040.14670.07760.00840.2243
WD050.17540.01520.01180.1906
J110.10790.04050.01690.1484
K090.06370.05980.01590.1235
H150.04660.01080.00720.0574
E070.04640.00340.00.0498
TOTAL0.23730.06860.02470.3059

Changes

Female Calls per Hour


Male Calls per Hour

Newsletter

2022-09-17

Welcome to my Pomona kiwi newsletter.

If you don't want to know feel free to unsubscribe using the link somewhere at the bottom.

Anyone can subscribe to this newsletter using this link.

The latest version of my notebook now has a permanent home at https://skraak.kiwi

I have finished labelling the 1550 actual calls detected over the winter. Avianz performed very well with a true positive rate of 41%, compared to its usual 20-25%. I think this is due to calmer weather with less wind and no Australian frogs confusing the issue.

The total number of calls recorded on Pomona is now 5739.

The first kiwi call detected was at C05, 21:04:32 on 28 October 2021, they are a busy lot.

The pair at C05 continue to call frequently.

The lone male at D03 seems to have found a mate, 2 female calls at the end of July including one duet. Maybe she is from D09, time will tell. He does a lot of calling anyway, it may be related to the busy pair at D09

There is a very active pair at D09 at the moment with a lot of duets and close calls recorded. Both of these recordings were made on the same night, they were close and the weather good so noise is no a problem. 30/07 between 1:15 and 2:15 am.

H04 remains very busy. Loud female call, followed by various duets, impossible to choose.

There is now an active pair at J11 with lots of duets detected.

Quite a few duets at M04, unusually large number of female calls here. This was a noisy recorder, it must have got damp, but seems to have substantially sorted itself out with time.

Nice N14 duet (very loud):

Busy couple at T10, are they the same as the N14 Kiwi pair? Both of these duets are on the same night, 23/06 between 7 and 8 pm.

Calls are mostly very distant at WB09, I may take this recorder away as it is a little out of the way and it is probably picking up the pair from H04.

Is there an interaction between kiwi and morepork, there may be at D09 and T10.

Kaka, detected on the same flight at S13T and H04 on 19 June, 2 am.

The median number of calls per night at a site with a resident pair seems to settle at 4 calls, the exception is F09 but this may be because the recorder is elevated over a very large area, yet still sheltered from the worst weather. It is probably picking up calls from more than a single pair.

Notebook at skraak.kiwi

I have some improvements planned for when I have time:

Next

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

CC BY-SA 4.0 David Cary. Last modified: May 29, 2024.