A5035263964- Avian ecology and behavior
- Fish Ecology and Management Studies
- Animal Ecology and Behavior Studies
- Fish Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Influenza Virus Research Studies
- Viral Infections and Vectors
- Bird parasitology and diseases
- Livestock and Poultry Management
- Animal Behavior and Reproduction
- Marine and fisheries research
- Plant and animal studies
- Species Distribution and Climate Change
- Animal Disease Management and Epidemiology
- Animal Nutrition and Physiology
- Genetic diversity and population structure
- Ecology and biodiversity studies
- Environmental and Biological Research in Conflict Zones
- Turtle Biology and Conservation
- Ichthyology and Marine Biology
- Rabbits: Nutrition, Reproduction, Health
- Aquaculture Nutrition and Growth
- Comparative Animal Anatomy Studies
- Mosquito-borne diseases and control
- Identification and Quantification in Food
Haslemere Hospital
2011-2025
UNSW Sydney
2023-2025
Environmental Earth Sciences
2023-2024
Peuplements végétaux et bioagresseurs en milieu tropical
2015
Université de Montréal
2010
Tour du Valat
2010
Institut de Recherche pour le Développement
2010
University of Leeds
1997-2007
Agricultural Development Advisory Service (United Kingdom)
1990-1991
Ministry of Agriculture and Agro Based Industry
1978-1987
Space-based tracking technology using low-cost miniature tags is now delivering data on fine-scale animal movement at near-global scale. Linked with remotely sensed environmental data, this offers a biological lens habitat integrity and connectivity for conservation human health; global network of sentinels change.
There is much debate about the relative roles of poultry movements and wild bird in spread highly pathogenic avian influenza H5N1. This article looks at problem from an ornithologic perspective. Outbreaks birds are examined relation to three scenarios possible involvement virus transmission. These separately for five phases outbreak that began 1997 which has recently become more dynamic terms spread. Most outbreaks seem reflect local acquisition infection a contaminated source, followed by...
Understanding of ecologic factors favoring emergence and maintenance highly pathogenic avian influenza (HPAI) viruses is limited. Although low persist evolve in wild populations, HPAI domestic birds cause economically serious epizootics that only occasionally infect populations. We propose evolutionary ecology considerations can explain this apparent paradox. Host structure transmission possibilities differ considerably between are likely to be major determinants virulence. Because viral...
This work forms part of a long-term study the ecology and behaviour rook (Corvus frugilegus L.) in Ythan Valley, Aberdeenshire. Its general aims were set out by Dunnet & Patterson (1968), who suggested that north-east Scotland populations experienced their most serious food shortage during summer. Lockie (1956), on other hand, inferred from observations food-fighting within flocks near Oxford winter was critical. (1970) found that, fighting over frequent winter, particularly snow when...
Many seabird species share characteristics of high inter-annual colony fidelity and prolonged mate fidelity. This study investigates these in a Sooty Tern Onychoprion fuscatus breeding colony. During the 2021 season, both members 80 pairs incubating Terns were individually ringed large on Bird Island, Seychelles. Ten each eight identifiable locations within nesting area. In 2022 2023 seasons, birds searched for throughout caught identification. Their nest sites marked their mates...
In 2005 and 2006, highly pathogenic avian influenza H5N1 infected wild birds or poultry in at least 55 countries Asia, Europe, Africa. Scientists still have limited understanding of how these were the virus behaves a field setting. Better ecological ornithological data are essential to resolve uncertainties. At present, information on species identity, location habitat, sampling capture methodology, as well details affected bird populations, inadequate lacking for most incidents birds....
Understanding marine predator distributions is an essential component of arresting their catastrophic declines.1Boerder K. Schiller L. Worm B. Not all who wander are lost: Improving spatial protection for large pelagic fishes.Mar. Pol. 2019; 105: 80-90https://doi.org/10.1016/j.marpol.2019.04.013Crossref Scopus (35) Google Scholar,2Dias M.P. Martin R. Pearmain E.J. Burfield I.J. Small C. Phillips R.A. Yates O. Lascelles Borboroglu P.G. Croxall J.P. Threats to seabirds: A global...
The over‐exploitation of wild birds and the products derived from them can be a key threat driving changes in bird species richness abundance. However, inadequate information on harvest levels combined with irregular population monitoring often means that role harvesting decline is difficult to quantify. Historically, pan‐tropical Sooty Tern Onychoprion fuscatus has been subjected extensive egg harvesting, yet sustained change future viability remains unclear. In this study, we used...
Widespread deaths of wild birds from which highly pathogenic avian influenza virus H5N1 has been isolated suggest that the continues to be lethal them. However, asymptomatic carriage by some could allow spread on migration. Confirmation such is therefore important for design mitigation measures disease in poultry. Two recent papers have reported isolation a small number water China and Russia concluded can viruses over long distances both contain weaknesses provision ornithological...
The differences between individuals at the centre and periphery of social groupings birds have been demonstrated, but night‐time roosts received little attention. Here, effects age, sex physical condition on structure Starling were investigated. It was found that dispersion different age categories heterogeneous; proportionately more adult males occurred in compared with periphery, first‐year females centre. Birds heavier than peripheral ones irrespective body‐size. We propose roost is...
Migration is a fundamental aspect of the ecology and evolutionary history many animals, driven by seasonal changes in resource availability habitat structure. Seabird migration has been investigated extensively highly temperate polar environments. By contrast, relationships between environmental have rarely studied tropical marine habitats. The sooty tern Onychoprion fuscatus most abundant seabirds, ranked as important species terms its annual estimated consumption resources. We used global...
In Seychelles, the common myna has been shown to have a negative impact on endangered endemic birds Denis Island, interfering with breeding attempts and attacking adult at their nests. This stimulated an attempt eradicate island's mynas.The eradication was undertaken in three phases, overall killing 1186 mynas lasting 5 years. Decoy trapping most effective method for catching mynas, but last were shot. compromised by catches of non-target species. Data collection from killed indicated that...
Female Starlings Sturnus vulgaris that laid distinctive eggs at Worplesdon, Surrey, in 1988 and 1989 were made to desert their partially completed first clutches by removing part way through the laying sequence. Most of these continued lay, but other Starlings' nests, most them subsequently a replacement clutch they reared themselves. Using estimates success nests colony over 14 breeding seasons, it is concluded intraspecific nest parasitism offers means maximizing annual chick production...
Ducks and seabirds are natural hosts for influenza A viruses (IAV). On oceanic islands, the ecology of IAV could be affected by relative diversity, abundance density ducks. Seabirds most abundant widespread avifauna in Western Indian Ocean and, this region, islands represent major breeding sites a large diversity potential host species. Based on serological assays, we assessed range virus subtype terns Ocean. We further investigated spatial variation transmission patterns between identified...
Abstract The western Indian Ocean supports over 6 200 000 pairs of Sooty Terns, some in very large colonies. During the past two centuries colonies have exhibited increase, stability, decline and extinction. main drivers these trends been habitat change unregulated human exploitation, especially adults; introduced predators appear to little effect at population level but may prevented re-colonisation following restoration. Regulated harvesting eggs, based on increasing knowledge Tern...
Eleven captive starlings were given food in troughs. Various parameters of the birds' behaviour measured when trough length, equivalent to feeding space, was reduced. Restriction space increased number agonistic encounters between birds but did not affect their rates or total amount they took. A dominance hierarchy established flock, which dominant had higher and initiated more than subordinates. All individuals with others alone. stepwise multiple regression analysis showed that main...
Summary Common Myna Acridotheres tristis is considered to be among the world’s most damaging invasive species through disturbance, predation, competition pathogen introduction native birds and other taxa. Claimed impacts on have often been based anecdotal reports. More substantive evidence of interference with small-island endemic has reported, but rarely quantified or subjected experimental manipulation. On Denis Island (Seychelles), up 10% Seychelles Warblers Acrocephalus sechellensis ,...