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Abstract:

The genus Sporophila (Emberizidae) comprises species of small finches characterized by marked sexual dichromatism, which in birds is positively associated with extent of female bias in parental care. We analyzed differences in parental care in Tawny-bellied (S. hypoxantha) and Rusty-collared (S. collaris) seedeaters. We video-recorded nest activity during incubation and when young were 2-4 and 7-9 days of age. Females of both species built the nest and incubated the eggs alone. Female Tawny-bellied Seed-eaters: (1) incubated 59% of the time, (2) had a higher frequency of nest visits than males when chicks were 2-4 days of age, and (3) their visits were longer because after feeding they remained in the nest brooding the chicks. There were no gender differences in frequency of nest visits when chicks were 7-9 days of age, but visits of females were longer than those of males. Female Rusty-collared Seedeaters: (1) incubated 51 % of the time and (2) had a higher frequency of nest visits when chicks were 7-9 days of age. Both males and females brooded chicks and there were no gender differences in frequency and length of nest visits when chicks were 2-4 days of age. Parental care in both species is female biased, but the extent of male care is slightly higher in Rusty-collared than in Tawny-bellied seedeaters.

Registro:

Documento: Artículo
Título:Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) seedeaters
Autor:Facchinetti, C.; Di Giacomo, A.G.; Reboreda, J.C.
Filiación:Departamento de Ecología, Genética y Evolución, Ciudad Universitaria, C1428EGA, Buenos Aires, Argentina
Departamento de Conservación, Aves Argentinas/Asociación Ornitológica del Plata, Matheu 1246, C1249AAB Buenos Aires, Argentina
Palabras clave:brood rearing; incubation; nest guarding; passerine; videography; Aves; Emberizinae; Fringillidae; Sporophila; Sporophila collaris; Sporophila hypoxantha
Año:2008
Volumen:120
Número:4
Página de inicio:879
Página de fin:883
DOI: http://dx.doi.org/10.1676/08-020.1
Título revista:Wilson Journal of Ornithology
Título revista abreviado:Wilson J. Ornithol.
ISSN:15594491
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15594491_v120_n4_p879_Facchinetti

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Citas:

---------- APA ----------
Facchinetti, C., Di Giacomo, A.G. & Reboreda, J.C. (2008) . Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) seedeaters. Wilson Journal of Ornithology, 120(4), 879-883.
http://dx.doi.org/10.1676/08-020.1
---------- CHICAGO ----------
Facchinetti, C., Di Giacomo, A.G., Reboreda, J.C. "Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) seedeaters" . Wilson Journal of Ornithology 120, no. 4 (2008) : 879-883.
http://dx.doi.org/10.1676/08-020.1
---------- MLA ----------
Facchinetti, C., Di Giacomo, A.G., Reboreda, J.C. "Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) seedeaters" . Wilson Journal of Ornithology, vol. 120, no. 4, 2008, pp. 879-883.
http://dx.doi.org/10.1676/08-020.1
---------- VANCOUVER ----------
Facchinetti, C., Di Giacomo, A.G., Reboreda, J.C. Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) seedeaters. Wilson J. Ornithol. 2008;120(4):879-883.
http://dx.doi.org/10.1676/08-020.1