A5041545350- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Bird parasitology and diseases
- Wildlife Conservation and Criminology Analyses
- Ecology and Vegetation Dynamics Studies
- Bat Biology and Ecology Studies
- Species Distribution and Climate Change
- Fish Ecology and Management Studies
- Mediterranean and Iberian flora and fauna
- Wildlife-Road Interactions and Conservation
- Environmental and Biological Research in Conflict Zones
- Pesticide Exposure and Toxicity
- Lepidoptera: Biology and Taxonomy
- Antibiotics Pharmacokinetics and Efficacy
- Turtle Biology and Conservation
- Livestock and Poultry Management
- Economic Zones and Regional Development
- Viral Infections and Vectors
- Ecology and biodiversity studies
- Plant and animal studies
- Plant and Fungal Interactions Research
- Salmonella and Campylobacter epidemiology
- Aeolian processes and effects
- Survey Sampling and Estimation Techniques
Royal Society for the Protection of Birds
2009-2024
Texas A&M University
2022
Nature Conservation Foundation
2018
National Centre for Biological Sciences
2018
Wildlife Conservation Society India
2018
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Abstract Gyps vulture populations across the Indian subcontinent collapsed in 1990s and continue to decline. Repeated population surveys showed that rate of decline was so rapid elevated mortality adult birds must be a key demographic mechanism. Post mortem examination majority dead vultures had visceral gout, due kidney damage. The realisation diclofenac, non-steroidal anti-inflammatory drug potentially nephrotoxic birds, become widely used veterinary medicine led identification diclofenac...
Weak environmental assessments undermine regulations
Summary The catastrophic declines of three species ‘Critically Endangered’ Gyps vultures in South Asia were caused by unintentional poisoning the non-steroidal anti-inflammatory drug (NSAID) diclofenac. Despite a ban on its veterinary use 2006 (India, Nepal, Pakistan) and 2010 (Bangladesh), residues diclofenac have continued to be found cattle carcasses dead wild vultures. Another NSAID, meloxicam, has been shown safe From 2012 2018, we undertook covert surveys pharmacies India, Nepal...
Abstract Vultures and condors are among the most threatened avian species in world due to impacts of human activities. Negative perceptions can contribute these threats as some vulture have been historically blamed for killing livestock. This perception conflict has increased recent years, associated with a viral spread partial biased information through social media despite limited empirical support assertions. Here, we highlight that magnifying infrequent events livestock being injured by...
Abstract Distribution, habitat use and selection, ranging behaviour, diet food supply of the stone curlew Burhinus oedicnemus were studied in a small, fragmented population at north‐western edge its world range. Stone curlews bred on short semi‐natural grassland spring‐sown arable farmland areas with sandy soils stones or rubble. They most active night travelled up to about 3 km from nest forage. Individuals used home range comprising an average 30 ha grassland, improved pasture crops for...
Summary This paper reports results from the eighth of a series road transect surveys Gyps vultures conducted across northern, central, western, and north-eastern India since early 1990s. Populations White-rumped Vulture bengalensis , Indian G. indicus Slender-billed tenuirostris declined rapidly, beginning in mid-1990s. The principal cause declines was poisoning due to widespread veterinary use non-steroidal anti-inflammatory drug (NSAID) diclofenac on cattle. current survey suggest that,...
Beginning in the mid‐1990s, populations of three species Gyps vultures declined by more than 97% South Asia little a decade, caused unintentional poisoning non‐steroidal anti‐inflammatory drug (NSAID) diclofenac. This led to ban on veterinary use drug, and establishment conservation breeding programmes, throughout region. Once much Nepal had been confirmed as being free from diclofenac, beginning 2017 White‐rumped Vultures bengalensis were released captive population. A total 99 birds ( n =...
Summary Jerdon's courser Rhinoptilus bitorquatus is a nocturnally active cursorial bird that only known to occur in small area of scrub jungle Andhra Pradesh, India, and listed as critically endangered by the IUCN. Information on its habitat requirements needed urgently underpin conservation measures. We quantified features correlated with use different areas coursers, developed model map potentially suitable over large from satellite imagery facilitate design surveys distribution. used 11...
1. We examined the influence of local weather conditions on reproductive success, timing breeding and survival in a population multi-brooded ground nesting passerine (woodlark Lullula arborea) over 35 years. 2. Woodlarks laid larger clutches when rainfall was low temperature high during egg-laying pre-laying period. Nest success increased with higher temperatures In successful nests, number chicks fledged per egg greater drier brood stage. 3. Although woodlarks bred earlier years warmer...
Abstract We examined seasonal prevalence in avian haemosporidians ( Plasmodium and Haemoproteus ) migrant resident birds western Himalaya, India. investigated how infection with hosts is associated temporal changes temperature mosquito abundance along host life‐history traits (body mass). Using molecular methods for parasite detection sequencing partial cytochrome b gene, 12 27 lineages were isolated. Our 1‐year study from December 2008 to 2009 tropical Himalayan foothills revealed a lack of...
(1) The selection of foraging habitats by five pairs woodlarks (Lullula arborea L.) breeding on pine plantations, which had been replanted less than 6 years before the study, was investigated in Thetford Forest, Norfolk. (2) Marked differences were observed between vegetation at feeding sites and that randomly selected within same areas. (3) Logistic models used to identify parameters characterized sites. (4) for more grass 5 cm tall bare ground There also evidence moss (over cm) dead grass....
Abstract The poor survival rate of immature northern bald ibises Geronticus eremita during their first years spent outside the natal site is driving last known wild colony migratory eastern population to extinction. To inform emergency conservation action for this Critically Endangered species we investigated distribution range and behaviour birds in passage wintering areas, threats which they are subject. We integrated recent satellite telemetry data with visual observations spanning 130...
Abstract The Northern Bald Ibis or Waldrapp Geronticus eremita is a species of arid semi-deserts and steppes, which was formerly widely distributed as breeding bird across North Africa, the Middle East European Alps. Just over 100 pairs now remain in wild at two sites Morocco whilst further Syria. There also population Turkey, maintained for part year captivity, large captive zoos. classified by IUCN ‘Critically Endangered’, highest threat category. has grown during past decade, represents...
Stable isotope analysis of feathers can be useful in the study seasonal interactions and migratory connectivity birds. For PalaearcticAfrican migration system, however, lack data from known origin Africa renders geographic assignment birds captured on European breeding grounds to potential wintering areas problematic. Rectrices threatened aquatic warbler Acrocephalus paludicola grown were sampled across six countries assess whether different populations shared similar isotopic signatures so...
Abstract Population declines of vultures the genus Gyps in Indian Subcontinent 1990s and 2000s were among most rapid global population recorded for any bird species. Multiple lines evidence identified veterinary treatment cattle with non‐steroidal anti‐inflammatory drug (NSAID) diclofenac as principal cause vulture crash. Diclofenac causes kidney failure death within a few days scavenging carcass recently treated cow. Despite coordinated regulatory action by governments to ban South Asia,...
The main wild population of the Northern Bald Ibis Geronticus eremita breeds on Atlantic coast Morocco in Agadir region. This paper describes numbers breeding pairs over last two decades, recent performance, causes egg and chick losses their conservation implications. Since 1980 there has been no overall decline with, 5 years, 59–74 a peak prebreeding around 220 birds. In contrast with now extinct populations Turkey elsewhere Morocco, birds are present region throughout year do not appear to...
Summary Safeguarding threatened species in captivity is a promising management approach, but evaluating the performance of captive programmes essential to assess reintroduction potential. The eastern population Northern Bald Ibis, Geronticus eremita, used be locally common migratory bird species, catastrophic declines throughout past century have resulted single southern Turkey that forages freely during summer only survives winter. We examined whether breeding success this semi-wild colony...
Abstract The northern bald ibis Geronticus eremita was once widespread throughout the Middle East, Africa, and southern central Europe. Habitat destruction, persecution impacts of pesticides have led to its disappearance from most former range. It disappeared Europe > 400 years ago, but has persisted as a relict slowly growing breeding population in Morocco, where c. 700 wild birds all ages remain. In Algeria, last confirmed 1984; Turkey fully 1989, remains semi-wild conditions. Syria...
The Northern Bald Ibis Geronticus eremita is a globally threatened species with its main remaining world population breeding in an area of sea cliffs and coastal semi‐desert steppe near Agadir southern Morocco. Between 1998 2002, we showed experimentally that the small‐scale provision fresh water colonies led to increase productivity birds. was greatest years low natural rainfall but positive all tested. supplementary appears help buffer against impacts now part ongoing conservation measures...
A few breeding populations of White-rumped Vultures (Gyps bengalensis) still survive in pockets their original vast range India, having weathered a diclofenac-induced population decline 99.9% since the early 1990s. These are potential sources recruits, now that overall appears to be stabilizing or even recovering some areas. We studied two Vulture nesting colonies Raigad district coastal Maharashtra 2013–2014, investigate site-specific success and nest-site selection. Our aim was better...
The Montserrat Oriole (Icterus oberi) is a critically endangered species, confined to small range in the hill forests of volcanic island eastern Caribbean. From 1998 2005 we studied its breeding biology and survival adults, finding that has smaller clutch, more extended parental care, higher adult than do orioles nesting North Temperate Zone. Adults' probabilities varied by year from 0.60 0.76 but were similar for both sexes. Average clutch size was 2.6 eggs (± 0.04 SE), post-fledging care...
Abstract This paper reports on the 1986 Woodlark survey – only national of species conducted to date and reviews subsequent changes in British populations. In 1986, population was approximately 250 pairs concentrated 5 regions: south%west England, New Forest/Dorset, Hampshire/Surrey border, Breckland Suffolk coast. Habitat occupancy differed between regions. Most Woodlarks were found young conifer plantations heathland, but neither these habitats important where birds used a variety...
Jerdon's courser Rhinoptilus bitorquatus is a nocturnal cursorial bird that now only known from small area of scrub jungle in Andhra Pradesh, India. Its population size, distribution and habitat requirements are poorly because its elusive habits. We conducted trial survey method involved deploying an array 5 m long tracking strips consisting smoothed fine soil, checking them for footprints at regular intervals. developed diagnostic methods distinguishing the those other species. Tracks were...