Publicado

2018-01-01

Duration and intensity of primary molt in two neotropical grasslands Passerines

Duración e intensidad de la muda de plumas primarias en dos Passeriformes neotropicales de pastizales

DOI:

https://doi.org/10.15446/caldasia.v40n1.68817

Palabras clave:

Volatinia jacarina, Sporophila intermedia, Gray Seedeater, molt patterns, neotropical birds, upper Magdalena valley (en)
aves neotropicales, patrones de muda, Sporophila intermedia, valle del Magdalena, Volatinia jacarina (es)

Autores/as

Description of patterns and mechanics of bird molt have permitted understanding and have clarified temporal and spatial dynamics in the life cycles of several temperate species. Few studies evaluate these aspects in Neotropical birds, which hinders their discussion in functional and evolutionary contexts. Here we compare primary molt duration and intensity of flight feather molt in two Neotropical passerine species, Blue-black Grassquit and Gray Seedeater. The study took place north of the department of Tolima-Colombia. Birds were captured and were marked with colored bands. Molt duration estimates follow Pimm’s and Rohwer and Wang’s methods, while molt intensity was evaluated using Rohwer’s proposal. Primary molt duration of Blue-black Grassquit was between 59 days (CI 95 % = 48–74) and 80 days (CI 95 % = 64–96), while the duration for Gray Seedeater was between 80 days (CI 95 % = 66–105) and 100 days (CI 95 % = 75–124). Estimates were consistent with those of other Neotropical Passerines with similar body mass, with a longer duration than that of temperate birds, evidence in favor of the hypothesis of slower pace of life in tropical birds. Method by Rohwer and Wang presents methodological advantages that would permit evaluating molt duration in species with low capture rates, suspended molts, or low molt synchrony between individuals. Molt intensity was higher in Gray Seedeater (13 feathers) than Blue-black Grassquit (9.3 feathers), and both were greater compared with other Passerines, which may represent an adaptive response to specific ecological pressures.

La descripción de patrones y mecánica de muda de las aves ha permitido esclarecer la dinámica en ciclos de vida de especies de zonas templadas. Pocos estudios evalúan estos aspectos en aves neotropicales, dificultando su discusión funcional y evolutiva. Acá comparamos la duración de muda de primarias e intensidad de muda de vuelo en dos especies de paseriformes neotropicales, V. jacarina y S. intermedia. Desarrollamos el estudio al norte del departamento de Tolima (Colombia); capturamos las aves en un matorral y las marcamos con anillos de colores. Utilizamos los métodos de Pimm, y Rohwer y Wang para estimar la duración, y calculamos la intensidad de muda según Rohwer. La duración de muda de V. jacarina fue de 59 días (IC 95 % = 48–74) y 80 días (IC 95 % = 64–96), mientras que para S. intermedia fue de 80 (IC 95 % = 66–105) y 100 días (IC 95 % = 75–124). Estos resultados fueron consistentes con la duración de muda de paseriformes con masas similares, aunque mayores que en especies de latitudes altas, apoyando la hipótesis del bajo ritmo de vida en evaluar la duración en especies con baja captura, con muda suspendida, o baja asincronía entre individuos. La intensidad de muda fue mayor en S. intermedia (13 plumas) que en V. jacarina (9,3 plumas), resultados mayores que otros paseriformes neotropicales, que pueden representar una respuesta adaptativa a presiones ecológicas específicas.

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Cómo citar

APA

Moreno Palacios, M., Losada Prado, S. & Echeverry Gálvis, M. Ángela. (2018). Duration and intensity of primary molt in two neotropical grasslands Passerines. Caldasia, 40(1), 27–40. https://doi.org/10.15446/caldasia.v40n1.68817

ACM

[1]
Moreno Palacios, M., Losada Prado, S. y Echeverry Gálvis, M. Ángela 2018. Duration and intensity of primary molt in two neotropical grasslands Passerines. Caldasia. 40, 1 (ene. 2018), 27–40. DOI:https://doi.org/10.15446/caldasia.v40n1.68817.

ACS

(1)
Moreno Palacios, M.; Losada Prado, S.; Echeverry Gálvis, M. Ángela. Duration and intensity of primary molt in two neotropical grasslands Passerines. Caldasia 2018, 40, 27-40.

ABNT

MORENO PALACIOS, M.; LOSADA PRADO, S.; ECHEVERRY GÁLVIS, M. Ángela. Duration and intensity of primary molt in two neotropical grasslands Passerines. Caldasia, [S. l.], v. 40, n. 1, p. 27–40, 2018. DOI: 10.15446/caldasia.v40n1.68817. Disponível em: https://revistas.unal.edu.co/index.php/cal/article/view/68817. Acesso em: 7 mar. 2026.

Chicago

Moreno Palacios, Miguel, Sergio Losada Prado, y María Ángela Echeverry Gálvis. 2018. «Duration and intensity of primary molt in two neotropical grasslands Passerines». Caldasia 40 (1):27-40. https://doi.org/10.15446/caldasia.v40n1.68817.

Harvard

Moreno Palacios, M., Losada Prado, S. y Echeverry Gálvis, M. Ángela (2018) «Duration and intensity of primary molt in two neotropical grasslands Passerines», Caldasia, 40(1), pp. 27–40. doi: 10.15446/caldasia.v40n1.68817.

IEEE

[1]
M. Moreno Palacios, S. Losada Prado, y M. Ángela Echeverry Gálvis, «Duration and intensity of primary molt in two neotropical grasslands Passerines», Caldasia, vol. 40, n.º 1, pp. 27–40, ene. 2018.

MLA

Moreno Palacios, M., S. Losada Prado, y M. Ángela Echeverry Gálvis. «Duration and intensity of primary molt in two neotropical grasslands Passerines». Caldasia, vol. 40, n.º 1, enero de 2018, pp. 27-40, doi:10.15446/caldasia.v40n1.68817.

Turabian

Moreno Palacios, Miguel, Sergio Losada Prado, y María Ángela Echeverry Gálvis. «Duration and intensity of primary molt in two neotropical grasslands Passerines». Caldasia 40, no. 1 (enero 1, 2018): 27–40. Accedido marzo 7, 2026. https://revistas.unal.edu.co/index.php/cal/article/view/68817.

Vancouver

1.
Moreno Palacios M, Losada Prado S, Echeverry Gálvis M Ángela. Duration and intensity of primary molt in two neotropical grasslands Passerines. Caldasia [Internet]. 1 de enero de 2018 [citado 7 de marzo de 2026];40(1):27-40. Disponible en: https://revistas.unal.edu.co/index.php/cal/article/view/68817

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