5. Results
The area surveyed by walkers, the whio sign found and the whio sightings are shown in Figure 5.1. The number of whio found in each river and the distance surveyed is shown in Table 1. A total of 52 adults (16 pairs, 20 singles), five juveniles and four ducklings were found. Seven singles were identified as males by their call, one as a female and the remaining 12 were of unknown sex. Several stretches of river were surveyed only in 1999 and data for these have been omitted from Table 1 to allow a better comparison over the ten year period.
Figure 5.1: Rivers surveyed, whio seen and whio sign (JPG, 99K)
Table 1. Number, age and sex of whio, catchment name and comparison of abundance of whio and whio sign
|
River
|
Whio seen 1999/2000
|
Whio seen 2009
|
Whio sign 1999
|
Whio sign 2009
|
|
Cobb River (14 km)
|
0
|
2 adults (1 pair),
4 ducklings*
|
N
|
Y*
|
|
Aorere (12 km)
|
6 adults (2 pair, 2 singles), 5 ducklings
|
1 adult
|
Y
|
Y
|
|
Spey River (12 km)
|
0
|
Sign only
|
N
|
Y
|
|
Taheke Stream (0.5 km)
|
1 adult
|
Sign only
|
Y
|
Y
|
|
Flanagans (3 km)
|
2 adults (1 pair)
|
2 adults (2 males)
|
Y
|
Y
|
|
Denton Creek (4.5 km)
|
0
|
0
|
N
|
N
|
|
Brown River (3.5 km)
|
0
|
0
|
N
|
N
|
|
Walsh Creek (2.5 km)
|
0
|
0
|
N
|
N
|
|
Kaituna River (8.4 km)
|
0
|
Sign only
|
N
|
Y
|
|
Webb Stream (12.5 km)
|
NA**
|
Not surveyed in 2009
|
NA
|
NA
|
|
Anaweka River (3.5 km)
|
0
|
0
|
N
|
N
|
|
Anatori River (14.5 km)
|
0
|
2 adult males
|
N
|
N
|
|
Turimawiwi River (5.5 km)
|
0
|
0
|
N
|
N
|
|
Kahurangi River (1 km)
|
3 adults (1 pair, 1 single)
|
0
|
Y
|
N
|
|
Stanley River (10 km)
|
Sign only
|
Sign only
|
Y
|
Y
|
|
Anatoki River (12 km)
|
9 adults (4 pairs, 1 single), 12 ducklings
|
6 adults (2 pair, 2 single males)
|
Y
|
Y
|
|
Waingaro River (31 km)
|
7 adults (2 pairs, 3 singles), 5 ducklings
|
4 adults (1 pair, 1 single female, 1 single), 1 juvenile
|
Y
|
Y
|
|
Waingaro River* (lower)
|
2 adults (1 pair)
|
10 adults (2 pair, 6 single), 1 juvenile
|
-
|
-
|
|
Lindsay Creek (1 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Devil River and Little Devil River (6 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Parapara River (4.5 km)
|
0
|
Sign only
|
N
|
Y
|
|
Burgoo
|
7 adults (3 pair, 1 single), 2 ducklings
|
7 adults (3 pair, 1 single male), 1 juvenile
|
Y
|
Y
|
|
Upper Slate River (6.5 km)
|
3 adults (1 pair, 1 single)
|
4 adults (1 pair, 2 singles), 1 juvenile
|
Y
|
Y
|
|
Lower Slate River (1 km)
|
0
|
Sign only
|
N
|
Y
|
|
Clark River (7.5 km)
|
4 adults (1 pair, 2 single)
|
2 adults (1 pair)
|
Y
|
Y
|
|
Cave Brook (1.8 km)
|
2 adults (1 pair)
|
2 adults (2 singles)
|
Y
|
Y
|
|
Saxon River (9 km)
|
3 adults (3 single)
|
2 adults (1 pair), 1 juvenile female
|
Y
|
Y
|
|
Blue Duck Stream (1.5 km)
|
Sign only
|
Sign only
|
Y
|
Y
|
|
Weka Stream (500 m)
|
0
|
Sign only
|
N
|
Y
|
|
Big River (7 km)
|
7 adults (2 pair, 3 singles)
|
6 adults (3 pair)
|
Y
|
Y
|
|
Shiner Brook (2 km)
|
Sign only
|
Sign only
|
Y
|
Y
|
|
Corkscrew Stream (1 km)
|
Sign only
|
0
|
Y
|
N
|
|
Perry Creek (3 km)
|
0
|
0
|
N
|
N
|
|
Gouland Creek (500 m)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Heaphy River
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Kohaihai River (13 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Oparara River (18.5 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Nimrodel Creek (4 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Galadriel Creek (2.5 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Postal River (6 km)
|
NA
|
Not surveyed in 2009
|
NA
|
NA
|
|
Celeborn Creek (2.5 km)
|
NA
|
Nor surveyed in 2009
|
NA
|
NA
|
|
Grand totals
|
1999/2000
54 adults: 19 pairs, 16 singles, 24 ducklings
|
2009
52 adults: 16 pairs, 20 singles, 5 juveniles, 4 ducklings
|
16
|
20
|
* Casual observations not using standard survey technique.
** Results from 1999 are not comparable so have been left out.
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