The development and behaviour of marked chicks in two broods of the Intermediate Egret Egretta intermedia plumifera are described. Incubation was 26 {± 1) days, the chicks flew at six and seven weeks old, and were fed at the nest until about ten weeks, when they left the heronry. The rate of food bolus delivery […]
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Showing 12 of 1617 documents
Showing 12 of 1617 documents
MORPHOLOGICAL NOTES FOR Accipiter SPECIES IN NORTHERN QUEENSLAND
Posted: 09/09/2021Morphological data are given for some forms of Accipiter species and a few other raptors captured in northern Queensland. The complexity of tropical Australian Accipiter assemblages is briefly discussed in terms of intraspecific and interspecific differences.
Read MoreWING LENGTH, WINGSPAN AND BODY LENGTH MEASUREMENTS OF LIVE BIRDS AT BANDING STATIONS
Posted: 09/09/2021Aspects of wing length, wingspan and body length measurements of live birds at banding stations are reviewed, using as examples data from a banding station at Cowiebank, southeastern Queensland. The histogram of the extended length measurement is a useful tool for sexing some morphometric species, and its use at banding stations is recommended: it has […]
Read MoreTHE USE OF FEATHER ABRASION IN MOULT STUDIES
Posted: 09/09/2021Four stages of leather abrasion have been defined for fully grown feathers; they can be recognized in the remiges, rectrices, and primary and secondary coverts of most birds. A code is given for each abrasion stage, allowing abrasion to be recorded in conventional moult formulae. Systematic recording of abrasion condition may help establish when moult […]
Read MoreRecovery Round-up: Volume 14 – Issue 4
Posted: 08/09/2021PREDATION OF LITTLE PENGUIN EGGS BY KING’S SKINKS ON PENGUIN ISLAND, WESTERN AUSTRALIA
Posted: 08/09/2021Egg loss of Little Penguins by King’s Skink predation on Penguin Island, Western Australia, is reported over two avian breeding seasons. Predation may depress the reproductive success of penguins at this colony.
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