Compared feeding behavior of the bird Numenius phaeopus (Charadriiformes: Scolopacidae) in its northbound and southbound migrations through Panama
Introduction: Mangroves and coastal areas are of vital importance for the conservation of many migratory birds for which they provide food and refuge, including the Eurasian whimbrel, Numenius phaeopus, which stops in Panama in a southbound, and, a few months later, in a northbound migration. Object...
| Published in: | UNED Research Journal |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | Spanish |
| Published: |
Universidad Estatal a Distancia, Costa Rica
2022
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| Subjects: | |
| Online Access: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/4026 https://doi.org/10.22458/urj.v14i1.4026 |
| Summary: | Introduction: Mangroves and coastal areas are of vital importance for the conservation of many migratory birds for which they provide food and refuge, including the Eurasian whimbrel, Numenius phaeopus, which stops in Panama in a southbound, and, a few months later, in a northbound migration. Objective: To evaluate the hypothesis that the bird uses different feeding behaviors in the southbound and the northbound migration. Methods: In 2018 we measured the time that the birds spent in exploratory pecking, standing, walking, running, and eating, in April-June, and October-November (3-5 days each month, N=56 birds). Results: In both stops, the birds spend the same mean time in all activities, which are dominated by walking (50% of food-related time). Conclusion: This species allocates its feeding time similarly in both stops at Panama. Introducción: Los manglares y las zonas costeras son de vital importancia para la conservación de muchas aves migratorias a las que brindan alimento y refugio, entre ellas el zarapito trinador, Numenius phaeopus, que se detiene en Panamá en una migración hacia el sur y, unos meses después, en una migración hacia el norte. Objetivo: Evaluar la hipótesis de que el ave utiliza diferentes comportamientos de alimentación en la migración hacia el sur y hacia el norte. Métodos: En 2018, medimos el tiempo que las aves dedicaron a picotear exploratoriamente, pararse, caminar, correr y comer, en abril-junio y octubre-noviembre (3-5 días cada mes, N=56 aves). Resultados: En ambas paradas, las aves dedican el mismo tiempo promedio a esas las actividades, en las que predomina la caminata (50% del tiempo relacionado con la alimentación). Conclusión: Esta especie distribuye su tiempo de alimentación de manera similar en ambas paradas en Panamá. |
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