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You searched for: Journal name Emu Remove constraint Journal name: Emu Publication year rev 7982-2018 Remove constraint Publication year rev: 7982-2018
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1. A new species of lapwing (Charadriidae: Vanellus) from the late Pliocene of central Australia

Author:
Vanesa L. De Pietri; R. Paul Scofield; Gavin J. Prideaux; Trevor H. Worthy
Source:
Emu 2018 v.118 no.4 pp. 334-343
ISSN:
1448-5540
Subject:
Pliocene epoch; Vanellus; coracoid; fauna; monophyly; new species; phenotype; South Australia
Abstract:
... We describe a new species of lapwing plover from the late Pliocene Kanunka Local Fauna of South Australia (3.6–2.6 mya).Vanellus liffyae sp. nov. is based on an almost complete coracoid, which is most similar in morphology to that of the Masked Lapwing (Vanellus miles). Nevertheless, it differs from this species and from the Banded Lapwing (V. tricolor), the only other extant resident Australian s ...
DOI:
10.1080/01584197.2018.1464373

2. Assessing potential Argentine Ant recruitment to pipping eggs in the Red-tailed Tropicbird on Rapa Nui (Easter Island)

Author:
Andrea Isabel Varela; Nicolas Luna; Guillermo Luna-Jorquera
Source:
Emu 2018 v.118 no.4 pp. 381-385
ISSN:
1448-5540
Subject:
Linepithema humile; Phaethon; breeding; chicks; eggs; indigenous species; introduced species; invasive species; monitoring; probability; seabirds; survival rate; Chile; Pacific Ocean Islands
Abstract:
... The invasive Argentine Ant, Linepithema humile, is known to prey on land bird chicks, but there are few reports of the ants’ impacts on breeding seabirds. We conducted a manipulative study using hen eggs to estimate the potential Argentine Ant recruitment to pipping eggs in the Red-tailed Tropicbird, Phaethon rubricauda, at Rapa Nui (Easter Island), Chile. Hen eggs were experimentally opened to si ...
DOI:
10.1080/01584197.2018.1464372

3. Bird responses to land use change: guild diversity in a Kenyan coastal forest and adjoining habitats

Author:
David O. Chiawo; Wellington N. Kombe; Adrian J. F. K. Craig
Source:
Emu 2018 v.118 no.3 pp. 281-292
ISSN:
1448-5540
Subject:
birds of prey; forest ecology; forests; frugivores; fruiting; granivores; habitats; insectivores; land use change; nectar feeding; plantations; species diversity; surveys; trees; Kenya
Abstract:
... Land use change can have profound effects on forest ecology, particularly on the avian community. Arabuko-Sokoke Forest, one of the Important Bird Areas (IBAs) in Kenya, is under threat due to ongoing land use change in the surroundings that could affect species composition of many bird guilds. However, information on the response of different guilds in tropical land use systems is sparse in Afric ...
DOI:
10.1080/01584197.2018.1431052

4. Bird species richness, composition and abundance in pastures are affected by vegetation structure and distance from natural habitats: a single tree in pastures matters

Author:
Mauricio Neves Godoi; Rudi Ricardo Laps; Danilo Bandini Ribeiro; Camila Aoki; Franco Leandro de Souza
Source:
Emu 2018 v.118 no.2 pp. 201-211
ISSN:
1448-5540
Subject:
cerrado; forest birds; forests; frugivores; habitats; insectivores; nutrient requirements; pastures; shrubs; species richness; trees; vegetation structure
Abstract:
... Throughout the world, natural habitats have been replaced by pastures. Thus, bird conservation requires making pastures more accessible for birds. The use of pastures by birds inhabiting the surrounding natural habitats may be affected by the structure of pastures and their distance from natural habitats. In this study we tested whether bird species richness, composition and abundance in pastures ...
DOI:
10.1080/01584197.2017.1398591

5. Breeding biology of Fluttering Shearwaters (Puffinus gavia) on Burgess Island in northern New Zealand

Author:
Martin Berg; Jannie F. Linnebjerg; Stefanie M. H. Ismar; Chris P. Gaskin; Matt J. Rayner
Source:
Emu 2018 v.118 no.2 pp. 173-182
ISSN:
1448-5540
Subject:
Puffinus gavia; adults; breeding; chicks; eggs; fledglings; indigenous species; nests; reproductive success; seabirds; vegetation; New Zealand
Abstract:
... The Fluttering Shearwater (Puffinus gavia) is an abundant seabird endemic to breeding colonies in northern and central New Zealand. The species remains poorly studied, and here we present the first study to examine its breeding biology in detail. Fluttering Shearwater nests were monitored from laying in September to fledging in January 2016 on Burgess Island in the outer Hauraki Gulf, northern New ...
DOI:
10.1080/01584197.2017.1366831

6. Breeding phenology and nest survival of Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in the agricultural landscapes of north-east Patagonia, Argentina

Author:
Luciano N. Segura; María S. Bó
Source:
Emu 2018 v.118 no.2 pp. 218-223
ISSN:
1448-5540
Subject:
Circus; agricultural land; breeding; grasslands; habitats; nesting; nests; phenology; population dynamics; survival rate; Argentina
Abstract:
... We present novel data on breeding ecology and nest survival of the Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in modified grasslands of southern Argentina and we evaluate variations in daily nest survival rates (DSR) in relation to temporal and habitat variables. We studied three mixed nesting colonies embedded in agricultural landscapes along a road. We found that DSR decre ...
DOI:
10.1080/01584197.2017.1404431

7. Conservation genomics of an endangered subspecies of Southern Emu-Wren, Stipiturus malachurus (Passeriformes: Maluridae)

Author:
Tessa Bradford; Marcus Pickett; Stephen Donnellan; Michael G. Gardner; Julie Schofield
Source:
Emu 2018 v.118 no.3 pp. 258-268
ISSN:
1448-5540
Subject:
Maluridae; birds; extinction; genetic variation; genomics; genotyping; haplotypes; historical records; inbreeding; mitochondria; nuclear genome; population viability; South Australia
Abstract:
... The endangered subspecies of Southern Emu-Wren (Stipiturus malachurus intermedius) in the Mount Lofty Ranges (MLR), South Australia has a fragmented distribution and poor dispersal capability. These factors make it susceptible to local population extinction, as evidenced by declining distribution and abundance since 1993. We documented genetic diversity by genotyping thousands of nuclear markers f ...
DOI:
10.1080/01584197.2017.1422391

8. Delayed plumage maturation explains differences in breeding performance of Saffron Finches

Author:
Fernando Marques-Santos; Uschi Wischhoff; James Joseph Roper; Marcos Rodrigues
Source:
Emu 2018 v.118 no.4 pp. 323-333
ISSN:
1448-5540
Subject:
Sicalis flaveola; body condition; breeding; breeding season; color; eggs; females; fledglings; foraging; males; nest boxes; nesting; nestlings; nests; parents; plumage; probability; progeny; reproductive performance; sexual selection; Brazil
Abstract:
... Theory predicts that, even within the same population, birds may vary their breeding investment with age. This may be due to an improvement in individual quality of old birds in body condition, foraging and in nesting experience. Birds commonly signal age and individual quality to potential mates and competitors through plumage colour. Young male and female breeders of Saffron Finches (Sicalis fla ...
DOI:
10.1080/01584197.2018.1450637

9. Do Diamond Firetails (Stagonopleura guttata) recognise the scent of their nest as other Estrildid finches do?

Author:
E. Tobias Krause; Barbara A. Caspers
Source:
Emu 2018 v.118 no.4 pp. 375-380
ISSN:
1448-5540
Subject:
Passeriformes; breeding; fledglings; interspecific variation; juveniles; lifestyle; nests; odors; parents
Abstract:
... Olfactory nest recognition has been demonstrated in several avian species, including some gregarious Estrildid finches. In social species, which also form breeding colonies, olfactory nest recognition gives parents and fledglings the opportunity to identify the natal nest. However, in less social birds, such as Diamond Firetails, which rarely breed in colonies, the benefit from olfactory nest reco ...
DOI:
10.1080/01584197.2018.1459727

10. Ecological functions of parrots: an integrative perspective from plant life cycle to ecosystem functioning

Author:
Guillermo Blanco; Fernando Hiraldo; José L. Tella
Source:
Emu 2018 v.118 no.1 pp. 36-49
ISSN:
1448-5540
Subject:
Psittaciformes; antagonists; demography; ecological footprint; ecological function; ecosystems; food plants; landscapes; parasites; parrots; seedlings; seeds; zoochory
Abstract:
... Parrots (Psittaciformes) have been viewed as efficient consumers of the reproductive structures of plants. Consequently, parrots have been excluded from studies focusing on plant–animal mutualistic relationships as they have been considered only as plant antagonists. This prevailing view is challenged, however, by recent studies showing that (1) several parrot species are the main seed dispersers ...
DOI:
10.1080/01584197.2017.1387031

11. Effects of weather, time of day, and survey effort on estimates of species richness in temperate woodlands

Author:
Murray V. Ellis; Jennifer E. Taylor
Source:
Emu 2018 v.118 no.2 pp. 183-192
ISSN:
1448-5540
Subject:
birds; cloud cover; data collection; sample size; species richness; surveys; temperature; wind speed; woodlands
Abstract:
... We used clearly defined measures of weather and time of day to determine their impacts on the number of bird species recorded in 5439 area-search surveys of 142 one-hectare sites in open temperate woodlands. Surveys recording the highest number of species spanned the full range of times of day and weather conditions. For our full dataset, the number of species recorded dropped by 16% at higher win ...
DOI:
10.1080/01584197.2017.1396188

12. Foraging behaviour and habitat use by Indian Yellow-nosed Albatrosses (Thalassarche carteri) breeding at Prince Edward Island

Author:
A. B. Makhado; R. J. M. Crawford; M. P. Dias; B. M. Dyer; T. Lamont; P. Pistorius; P. G. Ryan; L. Upfold; H. Weimerskirch; R. R. Reisinger
Source:
Emu 2018 v.118 no.4 pp. 353-362
ISSN:
1448-5540
Subject:
adults; breeding; chicks; chlorophyll; cold; foraging; habitat preferences; mixing; parents; population dynamics; satellites; wild animals; Indian Ocean; Prince Edward Island
Abstract:
... Demographic parameters of wild animals are often closely associated with their foraging distribution and behaviour, and understanding these attributes can assist in identifying causes of population changes. The Indian Yellow-nosed Albatross (Thalassarche carteri) is endangered but little information is available on its at-sea distribution and behaviour. It breeds only in French (Iles Amsterdam, St ...
DOI:
10.1080/01584197.2018.1469959

13. Further knowledge and urgent action required to save Orange-bellied Parrots from extinction

Author:
Dejan Stojanovic; Fernanda Alves; Henry Cook; Ross Crates; Robert Heinsohn; Andrew Peters; Laura Rayner; Shannon N. Troy; Matthew H. Webb
Source:
Emu 2018 v.118 no.1 pp. 126-134
ISSN:
1448-5540
Subject:
Neophema chrysogaster; breeding season; breeding sites; extinction; fecundity; females; fire suppression; fledglings; food contamination; food shortages; habitats; mortality; nestlings; nests; parrots; septicemia; species recruitment; wild birds
Abstract:
... Only three wild-bred female Orange-bellied Parrots returned from migration in the 2016/17 breeding season, representing the lowest point of a long-term decline. In this context of imminent extinction risk we (i) update knowledge of population parameters, (ii) critically evaluate current recovery actions, and (iii) identify new management options. We present new data from the 2016/17 breeding seaso ...
DOI:
10.1080/01584197.2017.1394165

14. Grassy patch size and structure are important for northern Eastern Bristlebird persistence in a dynamic ecosystem

Author:
Zoë L. Stone; Elizabeth Tasker; Martine Maron
Source:
Emu 2018 v.118 no.3 pp. 269-280
ISSN:
1448-5540
Subject:
Dasyornithidae; breeding programs; ecosystems; foraging; grasses; habitats; nesting; threatened species; topography; understory
Abstract:
... Reintroductions are a critical tool for threatened species’ conservation, and their success will depend on correctly identifying the key habitat requirements needed for persistence. The Critically Endangered, isolated northern population of the Eastern Bristlebird has declined to an estimated 40 individuals. A successful captive breeding programme means that future reintroductions are likely; howe ...
DOI:
10.1080/01584197.2018.1425628

15. Grey areas: temporal and geographical dynamics of international trade of Grey and Timneh Parrots (Psittacus erithacus and P. timneh) under CITES

Author:
R. O. Martin
Source:
Emu 2018 v.118 no.1 pp. 113-125
ISSN:
1448-5540
Subject:
Convention on International Trade in Endangered Species; Psittacus erithacus; biodiversity; databases; disease transmission; exports; imports; international trade; parrots; wild birds; Europe; North America; South Africa; West Asia
Abstract:
... International trade in wild birds is a driver of biodiversity loss, species invasions and the spread of diseases. Grey and Timneh Parrots (Psittacus erithacus and P. timneh) have been among the most frequently traded of all birds listed in the Appendices of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) and were recently categorised as Endangered on the ...
DOI:
10.1080/01584197.2017.1369854

16. Higher song complexity and intruder pressure at dawn in a vocally complex songbird

Author:
Samuel D. Hill; Matthew D. M. Pawley; Michael G. Anderson; Weihong Ji
Source:
Emu 2018 v.118 no.2 pp. 147-157
ISSN:
1448-5540
Subject:
diurnal variation; entropy; males; mate guarding; mating behavior; songbirds; territoriality; vocalization
Abstract:
... Dawn is a critical period for vocal displays in songbirds. At dawn, songbirds intensify their vocalisations, for example increasing their singing rates in response to increased intruder pressure at this time, and for mate guarding. However, little is known about diurnal variations in song complexity, a sexually selected vocal trait associated with mate choice and territorial defence. We compared s ...
DOI:
10.1080/01584197.2017.1380503

17. Incubation routine and associated changes in body mass of Gould’s Petrel (Pterodroma leucoptera)

Author:
Yuna Kim; David Priddel; Nicholas Carlile
Source:
Emu 2018 v.118 no.2 pp. 193-200
ISSN:
1448-5540
Subject:
Procellariiformes; birds; breeding; eggs; energy requirements; fasting; nests; parents
Abstract:
... Procellariiformes have prolonged incubation shifts, with breeding birds enduring long periods of fasting and substantial reductions in body mass. These changes can be physically demanding and parents must balance their own energy requirements with the needs of their unhatched young. The incubation routine and associated changes in body mass of breeding Gould’s Petrel (Pterodroma leucoptera) were s ...
DOI:
10.1080/01584197.2017.1396189

18. Male Great Bowerbirds perform courtship display using a novel structure that rivals cannot destroy

Author:
Natalie R. Doerr
Source:
Emu 2018 v.118 no.4 pp. 313-322
ISSN:
1448-5540
Subject:
courtship; females; males; reproduction; tree trunk; trees
Abstract:
... Male–male competition can cause less competitive males to pursue alternative mating strategies or defer reproduction until they are older. For species that display using non-bodily ornaments, male interference can also involve limiting rivals’ access to display materials. I document a novel solution to male interference with external display structures in Great Bowerbirds (Ptilonorhynchus nuchalis ...
DOI:
10.1080/01584197.2018.1442228

19. Mitogenomic and nuclear diversity in the Mulga Parrot of the Australian arid zone: cryptic subspecies and tests for selection

Author:
Kerensa McElroy; Keira Beattie; Matthew R. E. Symonds; Leo Joseph
Source:
Emu 2018 v.118 no.1 pp. 22-35
ISSN:
1448-5540
Subject:
Psephotus varius; arid zones; basins; body size; dry environmental conditions; genetic variation; mitochondrial genome; phylogeography; plumage; surface area
Abstract:
... The Australian arid zone is well recognised as a source of evolutionary novelty and diversity. Roles for selection vs. drift in the region remain less understood. We surveyed mitogenomic diversity and genome-wide nuclear markers in the Mulga Parrot (Psephotellus varius) to add to phylogeographic data from arid zone species. We found structured diversity either side of the Flinders Ranges–Lake Eyre ...
DOI:
10.1080/01584197.2017.1411765

20. Natal dispersal and philopatry of Chimango Caracaras (Milvago chimango) in suburban, rural and natural habitats, determined by band recovery and re-sighting data

Author:
Claudina Solaro; José Hernán Sarasola
Source:
Emu 2018 v.118 no.2 pp. 158-165
ISSN:
1448-5540
Subject:
Falconidae; adults; anthropogenic activities; birds of prey; breeding; breeding sites; fledglings; genetic structure; habitats; neotropical birds; nestlings; philopatry; prediction; rural areas; suburban areas; Argentina
Abstract:
... Natal dispersal is a process whereby birds move from their birthplace to the site of their first attempt at reproduction. This process has strong implications for the dynamics and genetic structure of populations. However, studies on the dispersal of neotropical birds of prey are scarce. Here we investigated the post-fledgling and natal dispersal and philopatry of a common but poorly studied rapto ...
DOI:
10.1080/01584197.2017.1321961

21. Pair fidelity in long-lived parrots: genetic and behavioural evidence from the Crimson Rosella (Platycercus elegans)

Author:
Justin R. Eastwood; Mathew L. Berg; Raoul F. H. Ribot; Helena S. Stokes; Johanne M. Martens; Katherine L. Buchanan; Ken Walder; Andrew T. D. Bennett
Source:
Emu 2018 v.118 no.4 pp. 369-374
ISSN:
1448-5540
Subject:
Passeriformes; Psittaciformes; breeding; brood parasitism; females; genetic analysis; genetic markers; longevity; mating systems; monogamy; parrots; paternity; progeny; Australia
Abstract:
... Genetic analyses have revolutionised our understanding of avian mating systems. However, the majority of such studies to date have focused on passerine species. Despite this taxonomic bias, extra-pair paternity (EPP) and conspecific brood parasitism (CBP) are usually concluded to be less common in taxa with pronounced longevity, socially monogamous mating systems, and bi-parental care. The order P ...
DOI:
10.1080/01584197.2018.1453304

22. Parrots of Oceania – a comparative study of extinction risk

Author:
George Olah; Jörn Theuerkauf; Andrew Legault; Roman Gula; John Stein; Stuart Butchart; Mark O’Brien; Robert Heinsohn
Source:
Emu 2018 v.118 no.1 pp. 94-112
ISSN:
1448-5540
Subject:
comparative study; endangered species; extinct species; extinction; forests; invasive species; islands; parrots; phylogeny; socioeconomic factors; unemployment; Australia; New Guinea; New Zealand; Pacific Ocean
Abstract:
... Australia, New Zealand, New Guinea, Wallacea, and the islands of the Pacific Ocean collectively possess 42% of the world’s parrot species, including half of all Critically Endangered species. We used comparative methods to review the factors related to extinction risk of 167 extant and 5 extinct parrot species from this region, subsequently referred to as ‘Oceania’. We tested a range of ecological ...
DOI:
10.1080/01584197.2017.1410066

23. Phylogenetic relationships of the Eastern Polynesian swiftlets (Aerodramus, Apodidae) and considerations on other Western Pacific swiftlets

Author:
Alice Cibois; Jean-Claude Thibault; Gerald McCormack; Eric Pasquet
Source:
Emu 2018 v.118 no.3 pp. 247-257
ISSN:
1448-5540
Subject:
Aerodramus; birds; islands; mitochondria; mitochondrial DNA; monophyly; nuclear genome; nucleotide sequences; Cook Islands; Indian Ocean; Melanesia; Philippines; Polynesia; Seychelles; Tahiti
Abstract:
... The patterns of colonisation and phylogenetic relationships of the swiftlets from Oceania, and in particular from the remotest archipelagos of Polynesia, remain a puzzle. In this study we used mitochondrial and nuclear DNA sequence data to infer the colonisation patterns of swiftlets endemic to Eastern Polynesia. The three endemic taxa did not form a monophyletic group. The Tahiti Swiftlet (Aerodr ...
DOI:
10.1080/01584197.2017.1420422

24. Predicting the distribution of the Vulnerable Yellow-breasted Pipit (Anthus chloris) using Species Distribution Modelling

Author:
Darren W. Pietersen; Ian T. Little; Raymond Jansen; Andrew E. McKechnie
Source:
Emu 2018 v.118 no.2 pp. 166-172
ISSN:
1448-5540
Subject:
Anthus; breeding; databases; geographical distribution; habitat destruction; habitats; models; population size; prediction; summer; zoogeography; Lesotho; South Africa
Abstract:
... The Yellow-breasted Pipit (Anthus chloris) is endemic to the eastern escarpment of South Africa, marginally entering eastern Lesotho. This species is classified as globally Vulnerable due to a perceived decreasing population size and loss of habitat. We employed Species Distribution Modelling to investigate the predicted range of this species to determine whether additional purportedly suitable ha ...
DOI:
10.1080/01584197.2017.1372689

25. Psittacine beak and feather disease: ecology and implications for conservation

Author:
Shane R. Raidal; Andrew Peters
Source:
Emu 2018 v.118 no.1 pp. 80-93
ISSN:
1448-5540
Subject:
Beak and feather disease virus; Cacatuidae; Neophema chrysogaster; animal pathogens; avifauna; beak; breeding programs; coevolution; endangered species; genotype; hosts; landscapes; molecular biology; parrots; secondary infection; viruses; Australasian region
Abstract:
... Beak and feather disease virus (BFDV) is the dominant pathogen of wild Psittaciformes in Australasia where it has been present for at least 10 million years. The richness of psittacine avifauna in this region has produced a mixture of potential hosts for the pathogen resulting in competing forces of virus co-evolution, spill-over infection and virus host-switches within parrots, cockatoos and lori ...
DOI:
10.1080/01584197.2017.1387029

26. Relationships among territory size, body size, and food availability in a specialist river duck

Author:
Silvina Ippi; Gerardo Cerón; Leandro M. Alvarez; Rodrigo Aráoz; Pedro G. Blendinger
Source:
Emu 2018 v.118 no.3 pp. 293-303
ISSN:
1448-5540
Subject:
aquatic invertebrates; biomass; body size; ducks; females; food availability; latitude; males; models; population density; prediction; rivers; territoriality; Andes region; Argentina
Abstract:
... Models of territorial behaviour predict a reduction in territory size when food availability and competitive pressure increase. Moreover, body size can play an important role in territorial defence. The Torrent Duck (Merganetta armata) is a river specialist that exhibits year-round territorial behaviour and long-term pair bonds. Food availability measured as biomass of invertebrates per unit area, ...
DOI:
10.1080/01584197.2018.1438848

27. Resolving a phylogenetic hypothesis for parrots: implications from systematics to conservation

Author:
Kaiya L. Provost; Leo Joseph; Brian Tilston Smith
Source:
Emu 2018 v.118 no.1 pp. 7-21
ISSN:
1448-5540
Subject:
Cacatuidae; Neotropics; conservation status; parrots; phylogeny; phylogeography; population genetics; surveys; taxonomic revisions; threatened species; trees; South East Asia
Abstract:
... Advances in sequencing technology and phylogenetics have revolutionised avian biology by providing an evolutionary framework for studying natural groupings. In the parrots (Psittaciformes), DNA-based studies have led to a reclassification of clades, yet substantial gaps remain in the data gleaned from genetic information. Here we provide an overview of published genetic data of parrots, characteri ...
DOI:
10.1080/01584197.2017.1387030

28. Revisiting methods for estimating parrot abundance and population size

Author:
Francisco V. Dénes; José L. Tella; Steven R. Beissinger
Source:
Emu 2018 v.118 no.1 pp. 67-79
ISSN:
1448-5540
Subject:
acoustics; analytical methods; cost effectiveness; data collection; flight; habitats; mark-recapture studies; models; parrots; population size; probability; roads; roadsides; surveys; vocalization
Abstract:
... Estimating abundance and population size is essential for many ecological and conservation studies of parrots. Achieving these goals requires methods that yield reliable estimates, but parrot traits can make them difficult to detect, count, and capture. We review established and emergent sampling and analytical methods used to estimate parrot abundance and population size, focusing on their assump ...
DOI:
10.1080/01584197.2017.1401903

29. Surface temperatures of albatross eggs and nests

Author:
Philipp H. Boersch-Supan; Leah R. Johnson; Richard A. Phillips; Sadie J. Ryan
Source:
Emu 2018 v.118 no.2 pp. 224-229
ISSN:
1448-5540
Subject:
Diomedea exulans; breeding; eggs; embryogenesis; heat production; islands; models; monitoring; nests; physiological response; surface temperature; temperature profiles; thermometers; South Georgia and South Sandwich Islands
Abstract:
... Knowledge of thermal traits is essential for understanding and modelling physiological responses to environmental change. Egg temperatures are poorly studied in most tubenose species. We employed a contactless infrared thermometer to measure egg and nest surface temperatures throughout the incubation period for four albatross species at Bird Island, South Georgia. The observed mean warm-side tempe ...
DOI:
10.1080/01584197.2017.1406311

30. Systematic review of geographic biases in the collection of at-sea distribution data for seabirds

Author:
Rowan Mott; Rohan H. Clarke
Source:
Emu 2018 v.118 no.3 pp. 235-246
ISSN:
1448-5540
Subject:
aerial surveys; anthropogenic activities; coasts; databases; developing countries; gross domestic product; planning; scientists; seabirds; spatial data; species richness; systematic review; wildlife; Africa; Asia; New Zealand; South America
Abstract:
... The distribution of wildlife informs conservation planning. In marine systems, spatial information for seabirds is acquired primarily using vessel-based at-sea survey, aerial survey or animal-borne tracking devices. Many factors contribute to geographic biases in marine spatial research and we use a structured database search to review global patterns resulting from these biases. Although survey e ...
DOI:
10.1080/01584197.2017.1416957

31. The eldest sibling is the lousiest in an obligate brood-reducer seabird

Author:
María Soledad Leonardi; Walter S. Svagelj; Agustina Gómez Laich; Flavio Quintana
Source:
Emu 2018 v.118 no.2 pp. 212-217
ISSN:
1448-5540
Subject:
breeding season; chicks; hatching date; hosts; lice; models; parasitism; parents; seabirds
Abstract:
... Previous studies on vertical transmission of lice on terrestrial birds have shown that the intensity of parasitism can vary within broods in relation to the hatching order of chicks. In species where the hatching order has an important effect on chick survival, lice would benefit from living on the host with the highest survival prospects. In the present work, we test this hypothesis using as mode ...
DOI:
10.1080/01584197.2017.1387028

32. Timing of nest predation events during incubation for six passerine species in the austral Chaco

Author:
Alejandro A. Schaaf; David L. Vergara-Tabares; Giovana Peralta; Agustín Díaz; Susana Peluc
Source:
Emu 2018 v.118 no.4 pp. 363-368
ISSN:
1448-5540
Subject:
Passeriformes; breeding; habitats; nesting; nests; parental behavior; predation; predators; temperature
Abstract:
... We analysed the temporal occurrence (day–night) and timing of nest predation events during incubation for six common passerine species breeding in austral Chaco, a temperate South American habitat. We recorded time of predation events and incubation parental care activity using temperature sensors (data validated by field observations of nest fate) for 187 nests. The temporal occurrence of 35 pred ...
DOI:
10.1080/01584197.2018.1450636

33. Understanding and managing the threats to Night Parrots in south-western Queensland

Author:
Stephen A. Murphy; Rachel Paltridge; Jennifer Silcock; Rachel Murphy; Alex S. Kutt; John Read
Source:
Emu 2018 v.118 no.1 pp. 135-145
ISSN:
1448-5540
Subject:
Pezoporus occidentalis; Triodia; cats; dogs; fauna; feces; feral animals; foxes; grazing intensity; habitats; herbivores; indigenous species; landscapes; predation; threatened species; wildfires; Queensland
Abstract:
... South-western Queensland supports a suite of threatened native species, including Night Parrots. We investigated why this species has persisted in the region and discovered low prevalence of the typical factors that are thought to explain fauna attrition elsewhere in central Australia. Foxes appear to be completely absent. Feral cats were recorded relatively infrequently and showed a significant p ...
DOI:
10.1080/01584197.2017.1388744

34. Video monitoring reveals novel threat to Critically Endangered captive-bred and released Regent Honeyeaters

Author:
Gemma Taylor; John G. Ewen; Rohan H. Clarke; Tim M. Blackburn; Glen Johnson; Dean Ingwersen
Source:
Emu 2018 v.118 no.3 pp. 304-310
ISSN:
1448-5540
Subject:
Petaurus norfolcensis; breeding; breeding season; chicks; fledglings; monitoring; nesting; nests; oviposition; predation; probability; reproductive success; species reintroduction; sugars; woodlands
Abstract:
... Nest predation is a primary cause of nest failure in open-cup nesting woodland birds and low reproductive success is a common reason why reintroduced species fail to establish in the wild. We used video monitoring to record the breeding outcomes and identify the causes of nest failure in a reintroduced population of the Critically Endangered Regent Honeyeater. We intensively monitored 28 nesting a ...
DOI:
10.1080/01584197.2018.1442227

35. Vocal dialects in parrots: patterns and processes of cultural evolution

Author:
Timothy F. Wright; Christine R. Dahlin
Source:
Emu 2018 v.118 no.1 pp. 50-66
ISSN:
1448-5540
Subject:
Amazona; ecology; genetic variation; geographical variation; learning; parrots; social benefit; songbirds; surveys; vocalization
Abstract:
... Vocal dialects have fascinated biologists for over 50 years. This mosaic pattern of geographic variation in learned vocalisations was first described in a songbird, and since that time most studies investigating dialects have focused on songbird species. Here we examine patterns of geographic variation in the calls of a different group of vocal learning birds, the parrots (order Psittaciformes). W ...
DOI:
10.1080/01584197.2017.1379356

36. Zebra Finches forage on seed from invasive Buffel Grass, but prefer seed from two common native grasses

Author:
Lauren I. Young; Christine A. Schlesinger
Source:
Emu 2018 v.118 no.4 pp. 344-352
ISSN:
1448-5540
Subject:
Cenchrus ciliaris; Enneapogon; Taeniopygia guttata; birds; cafeterias; diet; foraging; grass seed; indigenous species; introduced species; invasive species; landscapes; nutrient content; reproductive fitness; seed size; Australia
Abstract:
... Inland Australia is being transformed by invasive Cenchrus ciliaris (Buffel Grass) which is displacing native grasses. Zebra Finches (Taeniopygia guttata) forage on C. ciliaris seed but it is not known whether native grass seed is preferred. The preferences of captive-bred Zebra Finches for different species of grass seed were investigated using cafeteria trials. An equal volume of unhusked seed f ...
DOI:
10.1080/01584197.2018.1467212