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Changes in the relative abundance of Raptors and House Mice in western New South Wales.

Category: Issue 3
Author(s): Laurie Twigg and Barry Kay
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In western New South Wales, the relative abundance of both diurnal birds of prey and house mice was monitored at frequent intervals over a three-year period. The abundance of mouse-eating raptors was positively correlated with that of house mice, and these birds appeared to be responding to changes in mouse abundance. This suggests that the […]

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The effect of revegetation on Silver Gull and Sacred Ibis populations at Winter Swamp, Ballarat.

Category: Issue 3
Author(s): Barry Kentish
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Winter swamp, 7 km west of Ballarat, was improved as a wetland to encourage breeding birds. Islands, created to enhance the habitat for birds, were quickly colonised by breeding Silver Gulls. Revegetation with trees and shrubs on some islands reduced the breeding population of gulls. Lowest gull nest densities occurred on bare areas and beneath […]

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Sedentariness and survival of White-browed Scrub-wrens in the Brindabella Range, Australian Capital Territory

Category: Issue 3
Author(s): Wilson
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White-browed Scrub-wrens have been banded at New Chums Road in the Brindabella Range, Australian Capital Territory since 1961, as part of a larger bird-banding study. Adult White-browed Scrub-wrens were sedentary, and during the period 1961-82 their mean annual survival rate was 65 per cent. This compares with an annual survival of 77 per cent for […]

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