The trigger mechanism described here was designed to photograph predation events at artificial nests intended to mimic those of a ground dwelling Australian savannah species, the Partridge Pigeon Geophaps smithii.
Previous work found that Brown Treecreepers Climacteris picumnus were unable to disperse to isolated woodland patches in the New England Tablelands, northern New South Wales. I attempted to understand dispersal behaviour by testing how Brown Treecreepers react to landscape patterns while moving. I radio-tagged two male Brown Treecreepers on their resident territories and released them […]
Grey Grasswren Amytornis barbatus barbatus were studied in an 11 hectare area of tall, dense Lignum Muehlenbeckia cunninghamii in the Caryapundy Swamp of south-western Queensland between 1984 and 1996. One hundred and ninety-three individualswere captured and banded and 35 (18.1%) individuals were retrapped a total of 48 times. A pair of grasswrens with two recently fledged […]
The status of selected bird species in the Richmond River district, New South Wales, was analysed for the period 1973-2000. Several species clearly increased or decreased numerically. The White-winged Chough, Zebra Finch and White-backed Swallow are probably extinct locally; the Eastern bristlebird and Coxen’s Fig-parrot are confirmed to be Critically Endangered in the state. The […]
A bird-banding study which commenced in 1983 at Goode Beach near Albany, Western Australia has yielded morphometric data that raises two points that merit discussion concerning sexing of Red Wattlebird Anthochaera carunculata and New Holland Honeyeater Phylodonyris novaehollandiae.
Annual capture and recapture rates of a number of bird species obtained over an eighteen year period in an area cleared for urbanisation, have shown changes in populations which are considered related to development in the area. The increase in the number of honeyeaters in particular, implies they have benefited from the proliferation of nectar-producing […]
A mixed-species forging flock of more than 100 individuals and up to ten species was monitored over five days in winter in Acacia woodland near Gascoyne Junction, Western Australia. The flock had a core of five species, including Budgerigars Melopsittacus undulatus, woodswallows and chats, plus eleven other species, which joined the flock as it passed […]
Point counts (n=100) were used to assess the pattern of bird distribution during winter in Dryandra Woodland near Narrogin, Western Australia. Ninety-two birds were recorded with the majority of individuals (68%) occurring in mixed-species foraging flocks. From mid-July to early August, mixed-species foraging flocks were followed to identify the species present and estimate numbers of […]
Between 1973 and 1976 a population of Black-faced Woodswallows Artamus cinereus was studied at Manmanning, Western Australia. Fort-six breeding groups with an average group size of 3.34 birds were monitored in four years. Of 73 nests that were laid in, 48 hatched and 37 fledged young, a nesting success of 51 per cent. Young that […]
There has been an increase in the number of Pied Cormorants Phalacrocorax varius nesting on the small islands off the Perth coast,, with larger nesting colonies and increased numbers of nesting sites being used simultaneously. Overall the number of nests has quadrupled in recent years when compared with previous decades. The great majority of birds […]