Observations of the Australian Kestrel on Northern Tablelands of New South Wales, 1975

Genelly, Richard E.

doi:10.1071/mu9780137

Cited by 21 publications

(8 citation statements)

References 8 publications

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“…The district has been described by Genelly (1978), Kikkawa (1980), and Ford & Be11 (1981). In 1980 there was a drought and 515 mm of rain (68% of the mean annual rainfall) fell, and 1979 (643 mm) also was a dry year.…”

Section: Study Area and Methodsmentioning

confidence: 99%

Biology of the Little Eagle on the Northern Tablelands of New South Wales

Debus

1984

Emu - Austral Ornithology

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DEBUS, S.J. S. 1984. Biology of the Little Eagle on the Northern Tablelands of New South Wales. Emu 84: 87-92. The diet and breeding biology of the Little Eagle Hieraaetus morphnoides were investigated at Armidale, New South Wales in 1980. Data were supplemented by the RAOU Nest Record Scheme. Little Eagles took a wide range of vertebrate prey species in the breeding season. Prey items recorded at three nests consisted, by number, of about 60% mammal, 25% birdsnd 15% lizard and these figures agreed closely with the percentage occurrence of these prey types in pkllets (~5 5 % mammal, 25% bird and 20% lizard). Active nests were in living trees in patches of woodland. The ratio of two-to single-egg clutches was about 2:l. The incubation period was 36 to 40 days, and males shared incubation. The nestling period was about nine weeks, and the post-fledging dependence period appeared to last at least six weeks. The breeding cycle occupied about four months from nest building to fledging, and, for the district, about five months (August-January). Fledging success was about 0.5 young per pair per year, and about one in six successful nests raised two young. Breeding density was at least one pair per 1600 ha. Prey taken from each home range in the six-month breeding season was estimated at 120 young lagomorphs (48 kg), 50 birds (3 kg) and 30 lizards (4 kg).

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Section: Study Area and Methodsmentioning

confidence: 99%

Biology of the Little Eagle on the Northern Tablelands of New South Wales

Debus

1984

Emu - Austral Ornithology

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“…The diet of the nankeen kestrel is reasonably well known for much of New South Wales and Victoria, with many small studies (mostly 100-300 prey items) revealing predation on a variety of small mammals, birds, reptiles and invertebrates, the emphasis on each prey group changing in accordance, presumably, with its local availability (Genelly 1978;Olsen et al 1979;Baker-Gabb 1984a;Bollen 1991b;Paull 1991;Marchant and Higgins 1993). The reliance on small reptiles found here for central Australia (26% of prey items contributing 88% of dietary biomass) was far greater than that determined in these studies, although the population at Goulburn captured many grass skinks (Lampropholis guichenoti) and obtained 14% of dietary biomass from them (Bollen 1991b).…”

Section: Table 1 Mean Prey Weight Diet Diversity (Shannon's Index) mentioning

confidence: 99%

An intraspecific and interspecific comparison of raptor diets in the south-west of the Northern Territory, Australia

Aumann¹

2001

Wildl. Res.

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Dietary information, collected during 1995-97 in the south-west of the Northern Territory, is presented for 11 raptor species. Unlike better-studied populations of these species in south-eastern and eastern Australia, most of the raptors in the arid inland were found to depend heavily on reptiles and birds, the budgerigar (Melopsittacus undulatus) being a particularly important food for many species during those periods when it was plentiful. Between-territory, between-year and seasonal differences in diet are quantified for most species.The raptor assemblages in central Australia included specialists on medium-sized to large mammals, small to medium-sized birds, and small reptiles/invertebrates, as well as several generalists. Indices of prey diversity and evenness were calculated for each species, and diet overlap between them was used to investigate aspects of interspecific competition for food. Overall, diet overlap was greatest among the bird specialists and between some of the generalists. It increased in 1997, a year of comparative plenty, possibly because several species exploited an abundance of some prey taxa and competitive pressure eased. R a p t o r d i e t s i n t h e No r t h e r n T e r r i t o r y T . A u m a n n

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“…Foraging behaviour Genelly (1978) found that Nankeen Kestrels normally start foraging about an hour after sunrise, though foraging activity is dependent on the weather, virtually stopping in the middle of the warmest days or during wind-driven rain when shelter is sought. My observations were that in 2018 the pair of Kestrels started to deliver prey to the nest 5 h after sunrise on a day of misty weather, whereas in 2019 and 2020 the Kestrels first delivered prey to the nest 3 h after sunrise on fine days.…”

Section: Feeding Ratesmentioning

confidence: 99%

“…The Nankeen Kestrel Falco cenchroides is a falcon of most open habitats in Australia including farmland with scattered trees and inland shrublands and woodlands (Marchant & Higgins 1993;Debus 2019). Its diet and breeding have been reported in many studies, in various states and territories of Australia (Sharland 1931;Genelly 1978;Olsen et al 1979;Bollen 1991;Paull 1991;Aumann 2001;Starr et al 2004a;Schulz & Lumsden 2009;Leach et al 2015;Tsang et al 2017;Mo 2019;Pryor 2021). The species feeds on a wide range of invertebrate and vertebrate prey.…”

Section: Introductionmentioning

confidence: 99%

Feast of skinks for Nankeen Kestrels Falco cenchroides breeding on a bird-friendly farm

Stewart¹

2021

AFO

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Nankeen Kestrels Falco cenchroides raised three fledglings each year from 2018 to 2020 in nests in hollows of remnant eucalypts on a farm near Deans Marsh in southern Victoria. Observations were made each year of the adults feeding the chicks during foraging sessions, enabling the prey items and estimated feeding and hunting rates to be assessed. Skinks (Scincidae) formed a substantial proportion of the prey items delivered to the chicks. The delivery rate of prey by the male feeding a brood of three—6.0 items/h in 2018 and 2019, and 11.2 items/h in 2020 over 1.2 h—was at the high end of rates previously reported in which vertebrates made up the bulk of the prey. The breeding success of the Kestrels at the study site (three fledglings per nest) was at the high end of results of studies elsewhere in Australia (1–4 fledglings per nest started). Farming practices on this property have been designed to encourage wildlife including skinks, and this might have contributed to the high breeding success of the Kestrels.

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Observations of the Australian Kestrel on Northern Tablelands of New South Wales, 1975

Cited by 21 publications

References 8 publications

Biology of the Little Eagle on the Northern Tablelands of New South Wales

Biology of the Little Eagle on the Northern Tablelands of New South Wales

An intraspecific and interspecific comparison of raptor diets in the south-west of the Northern Territory, Australia

Feast of skinks for Nankeen Kestrels Falco cenchroides breeding on a bird-friendly farm

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