Posted: 18/08/2015
Author(s): T. Baylis, F. W. van Gessel and S. J. S. Debus
Sound-recordings of some calls of the Grey Falcon Falco hypoleucos (adult cackle calls, juvenile begging whines) are described and presented as sound spectrograms, and compared with some equivalent calls of the Peregrine Falcon F. peregrinus (adult female cackle, juvenile begging whine, probable juvenile cackle). The Grey Falcon cackle calls are similar to those of the Peregrine, though variously […]
Sexual size dimorphism in birds is widely used by ornithologists to identify the sex of individuals using linear discriminant analysis of morphological measurements. The feasibility of using this approach for the sexually monochromatic Hall’s Babbler Pomatostomus halli using 154 genetically-sexed individuals from a single population was investigated. In addition, geographic variation in size was examined […]
Posted: 23/05/2015
Author(s): Judy Smith and Peter Smith
Waterbirds were surveyed at the north-western end of Peery Lake, a large freshwater overfl ow lake on the Paroo River, between October 1990 and January 1994, following a major fl ood that fi lled the lake in April 1990. Before drying, the lake was recharged by a moderate fl ood in January 1993 and retained […]
Posted: 23/05/2015
Author(s): Andrew Black, Graham Carpenter, Roger Jaensch, Lynn Pedler and Reece Pedler
Two subspecies of the Grey Grasswren occupy terminal swamps of separate inland rivers, Amytornis barbatus barbatus on the Bulloo River and A. b. diamantina in Goyder Lagoon on the Diamantina. There have been sporadic reports from three other discrete areas; the Eyre Creek, Diamantina River and Cooper Creek fl oodplains. In a survey of those […]
Posted: 23/05/2015
Author(s): Immy Janse, Ulrike Kloecker, David Roshier and Ingrid Witte
The diet of a pair of Grey Falcons Falco hypoleucos was investigated in Sturt National Park, arid north-western New South Wales, by analysis of pellets and orts collected during October–December 2003 beneath a nest in a riparian Coolibah Eucalyptus coolabah beside a gibber plain. The falcons fl edged a brood of four young in a […]
