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Marsh Harrers Circus aeruginosus bred at a density ol one pair per 67 ha and all pairs were monogynous. Clutch sizes averaged 3.6 eggs and 2.0 young were fledged per successful nest, or 1.3 young per nest site. The mean fledging date was 6 January

White-faced Herons Ardea novaehollandiae were studied in Westernport Bay between 1977 and 1982. Herons were present throughout the year but most moved away from the coast during the breeding season. Some herons returned to the same areas of mudflat from year to year. Herons fed in a wide variety of habitats: intertidal mudflats, saltmarsh, freshwater marsh, cultivated […]

During sorveys of the avifauna of south-easlern New South Wales,  five persons were involved in the counting oi birds using a strip transect method. Although efforts were made to standardize procedures and to ensure ihat each person had about the same ability to identify birds. There were differences between observers which affected census results. In […]