Relación entre la estructura y la ubicación del nido del Varillero Ala Amarilla (Agelasticus thilius)

Maricel Graña Grilli; Diego Montalti

doi:10.56178/eh.v29i1.623

Short Communications Published 01 August 2014 https://doi.org/10.56178/eh.v29i1.623

The relationship between structure and location in the nest of the Yellow-winged Blackbird (Agelasticus thilius)

environmental influence nesting nest location nest structure predation

Maricel Graña Grilli División Zoología Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. Paseo del Bosque s/n, B1900FWA La Plata, Buenos Aires, Argentina

Diego Montalti División Zoología Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. Paseo del Bosque s/n, B1900FWA La Plata, Buenos Aires, Argentina

Abstract

Nest structure and location must maximize the benefit provided to chicks through isolation from the environment as well as protection against predators. The Yellow-winged Blackbird (Agelasticus thilius) builds open nests intertwined to trowel vegetation in marshlands. The height to which these birds build the nest and the thickness of their lateral walls and base were studied to look for a pattern that relates these characteristics. Nests were built in the lower half of bulrush canes and a positive correlation between height of canes and the distance between the nest and the cane tip was found. The thickness of both nest wall and base increased with the distance between the nest and the cane tip. This could reinforce nest structure improving its resistance to the effect of the wind without damage. Wall thickness was higher in nests built at a lower height, but base thickness was not correlated with this distance. Environmental factors that test the strength of the nest structure may be important in determining nest structure and location, while the influence of predation risk would be lower.

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References

CIRNE MP Y LÓPEZ-IBORRA G (2005) Breeding biologyof Chestnut-capped Blackbirds in rice paddies in south-ern Brazil. Journal of Field Ornithology 76:411–416
CODY ML (1985) An introduction to habitat selectionin birds. Pp. 3–56 en: CODY ML (ed) Habitat selectionin birds. Academic Press, Orlando
FRAGA RM (2011) Family Icteridae (New World black-birds). Pp. 684–807 en: DEL HOYO J, ELLIOTT A YCHRISTIE DA (eds) Handbook of the birds of the world.Volume 16. Tanagers to New World blackbirds. LynxEdicions, Barcelona
LACK D (1972) Ecological adaptation for breeding in birds.Chapman and Hall, Londres
LONG AM, JENSEN WE Y WITH KA (2009) Orientationof Grasshopper Sparrow and Eastern Meadowlarknests in relation to wind direction. Auk 111:395–399
MARTIN TE (1993) Nest predation among vegetationlayers and habitat types: revising the dogmas.American Naturalist 141:897–913
MASSONI V Y REBOREDA JC (1998) Costs of brood para-sitism and the lack of defenses on the yellow-winged blackbird-shiny cowbird system. BehavioralEcology and Sociobiology 42:273–280
MASSONI V Y REBOREDA JC (2001) Number of closespatial and temporal neighbors decreases theprobability of nest failure and shiny cowbird para-sitism in colonial yellow-winged blackbirds. Condor103:521–529
MASSONI V, LOETTI V Y REBOREDA JC (2005) Sexual di-morphism and parental care in the Yellow-wingedBlackbird (Agelaius thilius). Ornitología Neotropical16:551–555
ORIANS GH (1980) Some adaptations of marsh-nestingblackbirds. Princeton University Press, Princeton
REMEŠ V (2005) Nest concealment and parentalbehaviour interact in affecting nest survival in theblackcap (Sylvia atricapilla): an experimental evalu-ation of the parental compensation hypothesis.Behavioral Ecology and Sociobiology 58:326–333
RIDGELY RS Y TUDOR G (1989) The birds of South America.Volume 1. The oscine passerines. University of TexasPress, Austin
SALZMAN AG (1982) The selective importance of heatstress in gull nest location. Ecology 63:742–751
WEBB DR (1987) Thermal tolerance of avian embryos:a review. Condor 89:874–898
WITH KA Y WEBB DR (1993) Microclimate of groundnests: the relative importance of radiative cover andwind breaks for three grassland species. Condor95:401–413
ZAR JH (1999) Biostatistical analysis. Cuarta edición.Prentice Hall, Upper Saddle River

How to cite

Maricel Graña Grilli, Diego Montalti (2014). The relationship between structure and location in the nest of the Yellow-winged Blackbird (Agelasticus thilius). El Hornero, Vol. 29 No. 1 (2014), 37-40. https://doi.org/10.56178/eh.v29i1.623

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[1] CIRNE MP Y LÓPEZ-IBORRA G (2005) Breeding biologyof Chestnut-capped Blackbirds in rice paddies in south-ern Brazil. Journal of Field Ornithology 76:411–416

[2] CODY ML (1985) An introduction to habitat selectionin birds. Pp. 3–56 en: CODY ML (ed) Habitat selectionin birds. Academic Press, Orlando

[3] FRAGA RM (2011) Family Icteridae (New World black-birds). Pp. 684–807 en: DEL HOYO J, ELLIOTT A YCHRISTIE DA (eds) Handbook of the birds of the world.Volume 16. Tanagers to New World blackbirds. LynxEdicions, Barcelona

[4] LACK D (1972) Ecological adaptation for breeding in birds.Chapman and Hall, Londres

[5] LONG AM, JENSEN WE Y WITH KA (2009) Orientationof Grasshopper Sparrow and Eastern Meadowlarknests in relation to wind direction. Auk 111:395–399

[6] MARTIN TE (1993) Nest predation among vegetationlayers and habitat types: revising the dogmas.American Naturalist 141:897–913

[7] MASSONI V Y REBOREDA JC (1998) Costs of brood para-sitism and the lack of defenses on the yellow-winged blackbird-shiny cowbird system. BehavioralEcology and Sociobiology 42:273–280

[8] MASSONI V Y REBOREDA JC (2001) Number of closespatial and temporal neighbors decreases theprobability of nest failure and shiny cowbird para-sitism in colonial yellow-winged blackbirds. Condor103:521–529

[9] MASSONI V, LOETTI V Y REBOREDA JC (2005) Sexual di-morphism and parental care in the Yellow-wingedBlackbird (Agelaius thilius). Ornitología Neotropical16:551–555

[10] ORIANS GH (1980) Some adaptations of marsh-nestingblackbirds. Princeton University Press, Princeton

[11] REMEŠ V (2005) Nest concealment and parentalbehaviour interact in affecting nest survival in theblackcap (Sylvia atricapilla): an experimental evalu-ation of the parental compensation hypothesis.Behavioral Ecology and Sociobiology 58:326–333

[12] RIDGELY RS Y TUDOR G (1989) The birds of South America.Volume 1. The oscine passerines. University of TexasPress, Austin

[13] SALZMAN AG (1982) The selective importance of heatstress in gull nest location. Ecology 63:742–751

[14] WEBB DR (1987) Thermal tolerance of avian embryos:a review. Condor 89:874–898

[15] WITH KA Y WEBB DR (1993) Microclimate of groundnests: the relative importance of radiative cover andwind breaks for three grassland species. Condor95:401–413

[16] ZAR JH (1999) Biostatistical analysis. Cuarta edición.Prentice Hall, Upper Saddle River