Ecological insights on the feeding behaviour of waterbirds in an Important Bird and Biodiversity Area of South West Johor Coast, Malaysia

Biodiversity Data Journal, Journal Year: 2025, Volume and Issue: 13

Published: Jan. 15, 2025

Mangroves and mudflats are essential intertidal habitats that support benthic communities, providing critical feeding grounds for waterbirds. However, the degradation of these due to coastal reclamation poses significant threats prey availability waterbird populations along South est Johor Coast. While most avian research in focuses on forest birds, studies waterbirds, particularly their ecology, remain scarce. Understanding ecology waterbirds is crucial strengthening conservation efforts vulnerable habitats. This study investigated behaviour diet composition West Coast, Malaysia. Fieldwork was conducted three from November 2020 May 2021, employing direct observation technique. A total 576 hours were recorded, averaging 2 19 minutes per focal observation. Of 17 species only 11 included analysis based sufficient data. The results revealed primarily consumed fish, molluscs, worms, crabs unidentified prey, with fish comprising 25% overall diet. Feeding varied significantly by morphology traits, larger demonstrating higher efficiency. Despite lower rates shorter durations, had a greater percentage successful attempts, indicating superior ability meet energy requirements. These findings provide baseline data understanding highlight importance conserving contributes development targeted strategies Important Bird Biodiversity Area (IBA) Malaysia, an area increasingly at risk habitat degradation.

Language: Английский

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Environmental, Developmental, and Genetic Conditions Shaping Monarch Butterfly Migration Behavior

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Monarch butterflies in North America migrate south each autumn, but the mechanisms that initiate their migratory flight remain incompletely understood. We investigated environmental, developmental, and genetic factors contribute to directional by testing summer autumn-generation monarchs three simulators: two at ground level (with without wind blockage) a novel balloon-based system raised 30 meters into air. Monarchs reared under autumn-like conditions growth chamber during were also tested explore influence of developmental cues. Autumn generation demonstrated significant southwestern orientation, observed exclusively balloon simulator, underscoring importance high-altitude for behavior. Summer displayed southward larger wing sizes, partial reproductive diapause, indicating specific seasonal environmental cues are sufficient induce traits. In contrast, lab line captivity since 2016 exhibited diminished size reduced orientation ability, even when outdoors consistent with loss traits absence migration. Surprisingly, simulator tended orient upwind, which suggests may serves as cue These findings highlight critical roles altitude, wind, monarch migration validate powerful tool studying This research advances our understanding initiation informs strategies conservation efforts amidst change.

Language: Английский

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Influence of local (air temperature) and wide-scale (North Atlantic Oscillation) climate indices on the first arrival dates of the Common Wood Pigeon (Columba palumbus) at breeding site in SE Poland

International Journal of Biometeorology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

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Climate‐related drivers of migratory bird health in the south‐central USA

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

ABSTRACT Migratory birds are species of concern that play important ecological roles while also supporting recreational opportunities for the hunting and birdwatching public. Direct indirect effects climate variability, extremes, change on migratory bird health manifest at individual, population, species, community levels. This review focuses spend part their life cycles in south‐central USA. Although gaps knowledge remain, prior studies provide a solid foundation to understand how affects inform management priorities actions.

Language: Английский

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Floating Wetland Habitats: Conceptual Design and Analysis of Enhanced Global Flyway Potential

Cities research series, Journal Year: 2025, Volume and Issue: unknown, P. 69 - 89

Published: Jan. 1, 2025

Language: Английский

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