A5091036256- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Ecology and Vegetation Dynamics Studies
- Wildlife-Road Interactions and Conservation
- Fire effects on ecosystems
- Remote Sensing and LiDAR Applications
- Genetic and phenotypic traits in livestock
- Coral and Marine Ecosystems Studies
- Bird parasitology and diseases
- Effects of Environmental Stressors on Livestock
- Marine and fisheries research
- Bat Biology and Ecology Studies
- Plant and animal studies
University of Groningen
2014-2023
Field Foundation
2023
Hersenstichting
2014-2020
Centre d'Etudes Biologiques de Chizé
2016-2019
Centre National de la Recherche Scientifique
2016-2019
Given that soaring birds travel faster with supportive winds or in good thermal conditions, we expect weather conditions en route of migration to explain commonly observed regional and seasonal patterns the performance migrants. We used GPS‐loggers track 13 honey buzzards four Montagu's harriers for two six migrations each. determined how tailwinds, crosswinds, boundary layer height (a proxy convection) precipitation affected hourly speeds, daily distances mean speeds linear regression...
Hundreds of millions Afro-Palaearctic migrants winter in the Sahel, a semi-arid belt south Sahara desert, where they experience deteriorating ecological conditions during their overwintering stay and have to prepare for spring migration when are worst. This well-known phenomenon was first described by R.E. Moreau is known ever since as Moreau's Paradox. However, empirical evidence seasonal limited little on how birds respond. Montagu's Harriers Circus pygargus spend 6 months year wintering...
Flight behaviour characteristics such as flight altitude and avoidance determine the species‐specific collision risk of birds with wind turbines. However, traditional observational methods exhibit limited positional accuracy. High‐resolution GPS telemetry represents a promising method to overcome this drawback. In study, we used three‐dimensional tracking data including high‐accuracy tracks recorded at 3‐s intervals investigate breeding male Montagu's Harriers Circus pygargus in Dutch–German...
Farmland birds are in steep decline and agri‐environment schemes ( AES ) to counteract these biodiversity losses expensive inefficient. Here we test a novel , ‘Birdfields’, designed using detailed ecological knowledge of the target species, Montagu's Harrier Circus pygargus . Current such as field margins, that aim improve foraging conditions (i.e. vole densities) for harriers inefficient, prey difficult capture tall set‐aside habitat. ‘Birdfields’ combines strips boost numbers alfalfa,...
Time budgets are a powerful but hitherto seldom used way to study how migrants organise their bi‐annual travels. We studied daily time of travelling Montagu's harriers Circus pygargus , based on GPS tracking data, in which we were particularly interested differ between regions and seasons, affected by wind. found that relatively broad window for starting travels just after sunrise ending before sunset. Occasionally, flights extended into the night. frequently interrupted average 1.5 h d –1 ....
Long-distance migrants are particularly recognized for the distances covered on migration, yet little is known about they cover during rest of year. GPS-tracks 29 Montagu's harriers from breeding areas in France, The Netherlands and Denmark showed that fly between 35 653 88 049 km yr −1 , which average only 28.5% migration. Mean daily migration were 296 d autumn 252 spring. Surprisingly, males' (217 ) close to those whereas females moved significantly less (101 than males. In terms flight...
Palearctic migrants wintering in Africa commonly use several sites throughout the winter, a strategy known as ‘itinerancy’. In this way, track spatiotemporal variation resources. Despite importance of for migratory landbirds, we still lack detailed understanding how environmental conditions affects site and timing movements between sites. We tracked 125 adult Montagu’s Harriers Circus pygargus from Western European breeding populations 2005 2018 using satellite transmitters GPS trackers....
Migratory species are subject to environmental variability occurring on breeding and wintering grounds. Estimating the relative contribution of factors experienced sequentially during wintering, their potential interaction, variation survival is crucial predict population viability migratory species. Here we investigated this issue for Montagu's harrier Circus pygargus , a trans‐Saharan migrant. We analysed capture–recapture data from 29‐year long monitoring wing‐tagged offspring adults at...
In many owl and raptor species, sexes have distinct parental roles. Females incubate the eggs raise chicks until independence, while males provide females their with food. This is believed to reduce sexual conflict over care as tasks do not overlap. The level of also shaped by parent-offspring conflict. scarcity empirical data on investment in species sex-specific roles was our motivation study Montagu's Harrier Circus pygargus relation natural annual variation food availability (vole...
West African Slender-billed Gulls Chroicocephalus genei are considered vulnerable due to a very restricted breeding range. However, little information on their ecology is available support conservation action. We describe diet and foraging range of in the Saloum Delta National Park Senegal. Diet was analysed basis fish otoliths excretion (mixture pellets faeces) collected near nests at end incubation period between 2000 2015. mainly consumed families Cichlidae (25–93%), Clupeidae (0–54%)...
In this data paper three datasets are described containing GPS tracking and acceleration of Western marsh harriers ( Circus aeruginosus ) breeding in Belgium the Netherlands. The harrier is included as a threatened bird species Annex I European Bird Directive due to steep decline population densities. order collect habitat use migration behaviour, were equipped with light-weight solar powered trackers developed by Institute for Biodiversity Ecosystem Dynamics (IBED) at University Amsterdam...