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41 results for “insectivorous bird”
FIG. 1 in Elevational zonation of birds, insectivores, rodents and primates on the slopes of the Andringitra Massif, Madagascar
FIG. 1. Map of the Parc National d'Andringitra, study sites and surrounding localities mentioned in the text.
Evolution of chain migration in an aerial insectivorous bird, the common swift Apus apus
Spectacular long-distance migration has evolved repeatedly in animals enabling exploration of resources separated in time and space. In birds, these patterns are largely driven by seasonality, cost of migration, and asymmetries in competition leading most often to leap-frog migration, where northern breeding populations winter furthest to the south. Here we show that the highly aerial common swift Apus apus, spending the non-breeding period on the wing, instead exhibits a rarely-found chain migration pattern, where the most southern breeding populations in Europe migrate to wintering areas furthest to the south in Africa, while the northern populations winter to the north. The swifts concentrated in three major areas in sub-Saharan Africa during the non-breeding period, with substantial overlap for nearby breeding populations. We found that the southern breeding swifts were larger, raised more young, and arrived to the wintering areas with higher seasonal variation in greenness (Normalized Difference Vegetation Index, NDVI) earlier than the northern breeding swifts. This unusual chain migration pattern in common swifts is largely driven by differential annual timing and we suggest it evolves by prior occupancy and dominance by size in the breeding quarters and by prior occupancy combined with diffuse competition in the winter.
Factors shaping insectivorous farmland bird abundance in intensively cultivated arable fields: insights through the former Iron Curtain
<p>Data set to the results of the research article published in Agriculture, Ecosystems and Environment.</p>
Data from: Tropical tree diversity mediates foraging and predatory effects of insectivorous birds
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Data from: Differences in spatial synchrony and interspecific concordance inform guild-level population trends for aerial insectivorous birds
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Data from: Impact of urbanization on abundance and phenology of caterpillars and consequences for breeding in an insectivorous bird
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Data from: Severe recent decrease of adult body mass in a declining insectivorous bird population
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Data from: Demographic superiority with increased logging in tropical understorey insectivorous birds
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Data from: Canopy tree preference by insectivorous birds in shade-coffee farms: implications for migratory bird conservation
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Light and thermal niches of ground-foraging Amazonian insectivorous birds
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Evolution of chain migration in an aerial insectivorous bird, the common swift Apus apus
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Data from: Parallel declines in abundance of insects and insectivorous birds in Denmark over 22 years
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Enhancing ecosystem services in apple orchards: Nest boxes increase pest control by insectivorous birds
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Coarse-scale online data reveals habitat similarities but weak cross-taxa congruence between insectivorous bats and birds in the eastern U.S.
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Figures 3-5 from: França LF, Figueiredo-Paixão V, Duarte-Silva TA, Santos K (2020) The effects of rainfall and arthropod abundance on breeding season of insectivorous birds, in a semi-arid neotropical environment. Zoologia 37: 1-7. https://doi.org/10.3897/zoologia.37.e37716
Figures 3-5 (3) Aerial arthropod biomass, (4) accumulated precipitation and (5) active brood patches, during 27 sampling events. Data recorded between October 2015 and October 2016, with 14-day intervals, in an area of seasonally dry Neotropical forest in northeastern Brazil. The biomass were converted to proportion using the ratio between abundance at each sampling event and total abundance during the study. Brood patch was converted to proportion using the ratio between individuals with brood patches and total individuals captured during a sampling event. *In one month, we had three, instead of two, monthly samplings as a result of the 14-day interval between samples.
Figures 1-2 from: França LF, Figueiredo-Paixão V, Duarte-Silva TA, Santos K (2020) The effects of rainfall and arthropod abundance on breeding season of insectivorous birds, in a semi-arid neotropical environment. Zoologia 37: 1-7. https://doi.org/10.3897/zoologia.37.e37716
Figures 1-2 (1) Biomass and (2) number of arthropods recorded during 27 sampling events. Solid lines represent the aerial arthropods (windowpane trap and suction sampler), while dashed lines show terrestrial arthropod (pitfall trap). Data recorded between October 2015 and October 2016, with 14-day intervals, in an area of seasonally dry Neotropical forest, in northeastern Brazil. The abundance (biomass and number) were converted to proportion using the ratio between abundance at each sampling event and total abundance during the study. *In one month, we had three, instead of two, monthly samplings as a result of the 14-day interval between samples.
Urbanization mediates the effects of water quality and climate on a model aerial insectivorous bird
<p>Aerial insectivorous birds have experienced alarming population declines in eastern North America. Meanwhile, urbanization continues to increase rapidly, with urban land use comprising 69.4 million acres, or 3.6% of total land area, in the contiguous United States. Multiple environmental changes are associated with urbanization, including alterations to local climate, changes in habitat structure, and potential shifts in both terrestrial and emergent aquatic flying insects on which aerial insectivorous birds rely. Here, we investigated the linkages between urbanization, water quality, and Tree Swallow (<i>Tachycineta bicolor</i>) reproductive success and body condition at seven river-riparian sites representing urban and protected land use in Columbus, Ohio over five consecutive years (2014-2018). Tree Swallows at urban and protected sites relied on emergent aquatic insects for 37.4 and 30.8% (SD = 28.4 and 24.1%) of their nutritional subsidies, respectively. Despite the loss of environmental quality generally attributed to cities, Tree Swallows exhibited greater reproductive success in urban settings where climate was more amenable to egg and nestling survival, and the breeding season was longer. Urban-nesting Tree Swallows initiated laying 7.9 days earlier and fledged 35% more young per nest than those at protected sites. Multiple characteristics of urban sites appeared to drive these patterns, including differences in mean and extreme air temperatures and measures of water quality (e.g., water temperature, nutrient concentrations, turbidity). However, chronic effects of elevated Hg concentrations – which were 482% greater in adult swallow blood at urban sites than at protected sites where swallows exhibited a 17.4% lower trophic position – may disadvantage individuals in other ways. Further, although Tree Swallows are a good model aerial insectivore bird species, characteristics of urban landscapes that benefit Tree Swallows may not advantage other aerial insectivorous birds owing to differences in life-history and foraging strategies. These findings implicate urbanization, local climate, and water quality as important considerations in the conservation of aerial insectivorous birds.</p>
Figure 2 in Diet of tropical insectivorous birds in lowland Malaysian rainforest
Figure 2. The overall distribution of prey individuals determined in dietary samples of birds.
FIG. 3 in Elevational zonation of birds, insectivores, rodents and primates on the slopes of the Andringitra Massif, Madagascar
FIG. 3. Plots showing the relationship between mammal species richness and elevation.
FIG. 2 in Elevational zonation of birds, insectivores, rodents and primates on the slopes of the Andringitra Massif, Madagascar
FIG. 2. Plots showing the relationship between bird species richness and elevation.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.