Showing 12 of 56 documents

Monitoring populations of waterbirds in New England, New South Wales: how important are small wetlands?

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Category: Issue 5

Author(s): Stephen Ambrose and Victor Fazio

A cumulative total of 47 waterbird species was observed at five small wetlands around Armidale, northern New South Wales in 1985-86. Numbers of waterbirds peaked in March each year with a maximum count of 3 074 in 1986, suggesting that these wetlands are important refuges at the end of summer. Monthly and bi-monthly surveys indicated […]

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Modern Megapode research a post-Frith review

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Category: Issue 5

Author(s): Darryl Jones

Modern studies on the megapodes commenced with H. J. Frith’s studies or the Mallee Fowl Leipoa ocellata during the 1950’s. Since this time much debate has centred on the evolution of the family, especially on taxonomic relationships and routes of dispersion. More recently major advances in the understanding of megapode incubation have been made, especially […]

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Development and evaluation of a technique for individually marking Egrets.

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Category: Issue 5

Author(s): Max Maddock

A project studying the breeding biology, ecology and migration of egrets required a system of marking individual birds which could easily provide information on species, colony, season of banding and individual identification from observation made by non-expert field observers. Multiple Darvic or Celluloid leg bands proved slow and cumbersome to apply and observation of bands […]

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Sexing adult Silver Gulls Larus novaehollandiae by external measurements with confirmation by dissection

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Category: Issue 4

Author(s): Woehler, Park and Parr

Body measurements of 88 breeding adult Silver Gulls Larus novaehollandiae from north-west Tasmania enabled sexing of 95 percent of individuals based on Total Head Length and 93 percent of individuals on Bill Depth at Gonys measurements. Other body measurements exhibited higher degrees of overlap between males and females and were considered unsuitable for sexing purposes.

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