Annual commercial cull quotas for kangaroos are based on population estimates derived for each of the 11 kangaroo management zones in New South Wales. The kangaroo population estimates are principally obtained through direct monitoring of these species by aerial surveys using helicopters and fixed-wing aircraft. Where mountainous or heavily wooded areas prevent aerial surveys, walked line transects are conducted. Experimental aerial surveys, conducted over three years from winter of 1998, aim to develop a new set of regional habitat correction factors to be applied to the results obtained from fixed-wing aerial surveys. The currently used 200 m wide survey strip will be compared to a new 100 m wide survey strip as a part of this work. Since it is anticipated that this research will improve the fixed-wing aerial survey method, its outcomes will be adopted in the New South Wales aerial survey programme.

Cairns, S. C., 1996. A review of the New South Wales National Parks and Wildlife Service's Kangaroo Aerial Survey Program. A report to the New South Wales National Parks and Wildlife Service. 27 Pp.
Caughley, G., Sinclair, R. and Scott-Kemmis, D., 1976. Experiments in aerial survey. J. Wildl. Manage. 40: 290-300.
Experiments in aerial survey
, 
J. Wildl. Manage.
, vol. 
40
 (pg. 
290
-
300
)
Caughley, G., Sinclair, R. G. and Wilson, G., 1977. Numbers, distribution and harvesting rates of kangaroos on the inland plains of New South Wales. Aust. Wildl. Res. 4: 99-108.
Numbers, distribution and harvesting rates of kangaroos on the inland plains of New South Wales
, 
Aust. Wildl. Res.
, vol. 
4
 (pg. 
99
-
108
)
Caughley, G. and Grigg, G., 1981. Surveys of the distribution and densities of kangaroos in the pastoral zone of South Australia, and their bearing do the feasibility of aerial survey in large and remote areas. Aust. Wildl. Res. 8: 1-11.
Surveys of the distribution and densities of kangaroos in the pastoral zone of South Australia, and their bearing do the feasibility of aerial survey in large and remote areas
, 
Aust. Wildl. Res.
, vol. 
8
 (pg. 
1
-
11
)
Caughley, C., Brown, B., Dostine, P and Grice, D., 1984. The grey kangaroo overlap zone. Aust. Wildl. Res. 11: 1-10.
The grey kangaroo overlap zone
, 
Aust. Wildl. Res.
, vol. 
11
 (pg. 
1
-
10
)
Caughley, J., Bayliss, P and Giles, J., 1984. Trend of kangaroo populations in western New South Wales and their relationship to rainfall. Aust. Wildl. Res. 11: 415-22.
Trend of kangaroo populations in western New South Wales and their relationship to rainfall
, 
Aust. Wildl. Res.
, vol. 
11
 (pg. 
415
-
22
)
Clancy, T F., Pople, A. R. and Gibson, L. A., 1997. Comparison of helicopter line transects with walked line transects for estimating densities of kangaroos. Wildl. Res. 24: 397-409.
Comparison of helicopter line transects with walked line transects for estimating densities of kangaroos
, 
Wildl. Res.
, vol. 
24
 (pg. 
397
-
409
)
Pople, A. R., Cairns, S. C., Clancy, T. F., Grigg, C. C., Beard, L. A. and Southwell, C. J., 1998a. An assessment of the accuracy of kangaroo surveys using fixed-wing aircraft. Wildl. Res. 25: 315-26.
An assessment of the accuracy of kangaroo surveys using fixed-wing aircraft
, 
Wildl. Res.
, vol. 
25
 (pg. 
315
-
26
)
Pople, A. R., Cairns, S. C., Clancy, T F., Grigg, G. C., Beard, L. A. and Southwell, C. J., 1998b. Comparison of surveys of kangaroos in Queensland using helicopter and fixed-wing aircraft. Rangel. J. 20: 92-103.
Comparison of surveys of kangaroos in Queensland using helicopter and fixed-wing aircraft
, 
Rangel. J.
, vol. 
20
 (pg. 
92
-
103
)
Southwell, C., Weaver, K. E., Cairns, S. C., Pople, A. R., Gordon, A. N., Sheppard, N. W. and Broers, R., 1995. Abundance of macropods in north-eastern New South Wales, and the logistics of broad-scale ground surveys. Wildl. Res. 22: 757-66.
Abundance of macropods in north-eastern New South Wales, and the logistics of broad-scale ground surveys
, 
Wildl. Res.
, vol. 
22
 (pg. 
757
-
66
)
Southwell, C., 1993. Aerial line transect estimation of euro population size in the Barrier Ranges of western New South Wales. A report to the New South Wales National Parks and Wildlife Service.
This content is only available as a PDF.