Nidificación de la Loica Pampeana (Sturnella defilippii) en la provincia de Buenos Aires, Argentina

Natalia C. Cozzani; Rocío Sánchez; Sergio M. Zalba

doi:10.56178/eh.v19i2.828

Articles Published 01 December 2004 https://doi.org/10.56178/eh.v19i2.828

Nesting of the Pampas Meadowlark (Sturnella defilippii) in Buenos Aires Province, Argentina

breeding success conservation Pampas grasslands Pampas Meadowlark Sturnella defilippii

Natalia C. Cozzani GEKKO, Grupo de Estudios en Conservación y Manejo. Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur. San Juan 670, 8000 Bahía Blanca, Buenos Aires, Argentina

Rocío Sánchez GEKKO, Grupo de Estudios en Conservación y Manejo. Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur. San Juan 670, 8000 Bahía Blanca, Buenos Aires, Argentina

Sergio M. Zalba GEKKO, Grupo de Estudios en Conservación y Manejo. Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur. San Juan 670, 8000 Bahía Blanca, Buenos Aires, Argentina

Abstract

Pampas grasslands are possibly the most severely degraded ecosystem in Argentina, mainly due to the advance of animal and crop farming. These activities have a negative impact on grassland birds, including the Pampas Meadowlark (Sturnella defilippii), a species considered Vulnerable. In this paper we present data from a reproductive group of Pampas Meadowlark in the vicinity of Bahía Blanca, Buenos Aires Province. During the spring and summer of 2003 we found 16 nests in a field with a low stocking rate. We recorded hatching and nest abandonment by nestlings, as well as predation and adult behaviour. We found the first nest on 18 November, and the others up until 6 December. Nests were arranged in a clustered pattern; they were cup shaped with an external diameter of 9.5 cm, an internal diameter of 8.9 cm and a depth of 5.2 cm. They were mainly constructed with grasses, and placed on the ground amongst tussocks of Stipa spp. and Piptochaetium spp. The mean clutch size was 3.14 eggs per nest. Half of the detected nests were predated. Our results reinforce the opinion of other authors concerning the importance of natural grasslands for the reproduction of this species.

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References

BERTONATTI C (1997) Estrategia de conservación para lasaves de la Argentina. Antecedentes y propuestas. Aso-ciación Ornitológica del Plata, Buenos Aires
BERTONATTI C Y CORCUERA J (2000) Situación ambientalargentina 2000. Fundación Vida Silvestre Argentina,Buenos Aires
BILENCA D Y MIÑARRO F (2004) Identificación de áreasvaliosas de pastizal (AVPs) en las Pampas y Campos deArgentina, Uruguay y sur de Brasil. Fundación VidaSilvestre Argentina, Buenos Aires
BIRDLIFE INTERNATIONAL (2000) Threatened birds of theworld. Lynx Edicions y BirdLife International,Barcelona y Cambridge
BUCHER EH, KUFNER MB, MARCHESE M, ROGE AP, RO-MANO M Y ZALBA S (1998) Informe final. Taller regionalCentro. Estrategia nacional de biodiversidad. Informetécnico
BUCHER EH Y NORES M (1988) Present status of birdsin steppes and savannas on northern and centralArgentina. Pp. 71–79 en: PD GORIUP (ed) Ecology andconservation of grassland birds. International Councilfor Bird Preservation, Cambridge
COLLAR NJ, GONZAGA LP, KRABBE N, MADROÑO NIETOA, NARANJO LG, PARKER TA Y WEGE DC (1992) Threat-ened birds of the Americas: the ICBP/IUCN Red DataBook. International Council for Bird Preservation,Cambridge
FERNÁNDEZ GJ, POSSE G, FERRETTI V Y GABELLI FM (2003)Bird-habitat relationship for the declining PampasMeadowlark populations in the Southern Pampasgrasslands. Biological Conservation 115:139–148
FRAGA RM, CASAÑAS H Y PUGNALI G (1998) Naturalhistory and conservation of the endangeredSaffron-cowled Blackbird Xanthopsar flavus in Ar-gentina. Bird Conservation International 8:255–267
GOCHFELD M (1978) Social facilitation of singing:group size and flight song rates in the PampasMeadowlark, Sturnella defilippii. Ibis 120:338–339
GOCHFELD M (1979a) Brood parasite and host coevo-lution: interactions between Shiny Cowbirds andtwo species of Meadowlarks. American Naturalist113:855–870
GOCHFELD M (1979b) Interspecific territoriality in Red-Breasted Meadowlarks and a method for estimat-ing the mutuality of their participation. BehavioralEcology and Sociobiology 5:159–170
HOLLAND AH Y SCLATER PL (1895) Field-notes on thebirds of the Estancia Santa Elena, ArgentineRepublic. Ibis 1895:213–217
HUDSON GE (1974) [1920] Aves del Plata. Libros deHispano-América, Buenos Aires
KREBS CJ (1989) Ecological methodology. Harper Collins,New York
LEON RJC, RUSCH OM Y OESTERHELD M (1984)Pastizales pampeanos: impacto agropecuario.Phytocoenologia 12:201–218
SORIANO A, LEON RJC, SALA OE, LAVADO RS, DEREGIBUSVA, CAUHEPE MA, SCAGLIA OA, VELAZQUEZ CA YLEMCOFF JH (1991) Río de la Plata grasslands. Pp.367–407 en: RT COUPLAND (ed) Ecosystems of the world.Vol. 8A. Natural grasslands. Elsevier, Amsterdam
TUBARO PL Y GABELLI FM (1999) The decline of thePampas Meadowlark: difficulties of applying theIUCN criteria to neotropical grassland birds. Stud-ies in Avian Biology 19:250–257
VICKERY PD, TUBARO PL, CARDOSODA SILVA JM,PETERJOHN BG, HERKERT JR Y CAVALCANTI RB (1999).Conservation of grassland birds in the WesternHemisphere. Studies in Avian Biology 19:2–26Z
ZALBA SM Y COZZANI NC (2004) The impact of feralhorses on grassland bird communities in Argentina.Animal Conservation 7:35–44

How to cite

Natalia C. Cozzani , Rocío Sánchez, Sergio M. Zalba (2004). Nesting of the Pampas Meadowlark (Sturnella defilippii) in Buenos Aires Province, Argentina. El Hornero, Vol. 19 No. 2 (2004), 47-52. https://doi.org/10.56178/eh.v19i2.828

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License: CC BY-NC 4.0

[1] BERTONATTI C (1997) Estrategia de conservación para lasaves de la Argentina. Antecedentes y propuestas. Aso-ciación Ornitológica del Plata, Buenos Aires

[2] BERTONATTI C Y CORCUERA J (2000) Situación ambientalargentina 2000. Fundación Vida Silvestre Argentina,Buenos Aires

[3] BILENCA D Y MIÑARRO F (2004) Identificación de áreasvaliosas de pastizal (AVPs) en las Pampas y Campos deArgentina, Uruguay y sur de Brasil. Fundación VidaSilvestre Argentina, Buenos Aires

[4] BIRDLIFE INTERNATIONAL (2000) Threatened birds of theworld. Lynx Edicions y BirdLife International,Barcelona y Cambridge

[5] BUCHER EH, KUFNER MB, MARCHESE M, ROGE AP, RO-MANO M Y ZALBA S (1998) Informe final. Taller regionalCentro. Estrategia nacional de biodiversidad. Informetécnico

[6] BUCHER EH Y NORES M (1988) Present status of birdsin steppes and savannas on northern and centralArgentina. Pp. 71–79 en: PD GORIUP (ed) Ecology andconservation of grassland birds. International Councilfor Bird Preservation, Cambridge

[7] COLLAR NJ, GONZAGA LP, KRABBE N, MADROÑO NIETOA, NARANJO LG, PARKER TA Y WEGE DC (1992) Threat-ened birds of the Americas: the ICBP/IUCN Red DataBook. International Council for Bird Preservation,Cambridge

[8] FERNÁNDEZ GJ, POSSE G, FERRETTI V Y GABELLI FM (2003)Bird-habitat relationship for the declining PampasMeadowlark populations in the Southern Pampasgrasslands. Biological Conservation 115:139–148

[9] FRAGA RM, CASAÑAS H Y PUGNALI G (1998) Naturalhistory and conservation of the endangeredSaffron-cowled Blackbird Xanthopsar flavus in Ar-gentina. Bird Conservation International 8:255–267

[10] GOCHFELD M (1978) Social facilitation of singing:group size and flight song rates in the PampasMeadowlark, Sturnella defilippii. Ibis 120:338–339

[11] GOCHFELD M (1979a) Brood parasite and host coevo-lution: interactions between Shiny Cowbirds andtwo species of Meadowlarks. American Naturalist113:855–870

[12] GOCHFELD M (1979b) Interspecific territoriality in Red-Breasted Meadowlarks and a method for estimat-ing the mutuality of their participation. BehavioralEcology and Sociobiology 5:159–170

[13] HOLLAND AH Y SCLATER PL (1895) Field-notes on thebirds of the Estancia Santa Elena, ArgentineRepublic. Ibis 1895:213–217

[14] HUDSON GE (1974) [1920] Aves del Plata. Libros deHispano-América, Buenos Aires

[15] KREBS CJ (1989) Ecological methodology. Harper Collins,New York

[16] LEON RJC, RUSCH OM Y OESTERHELD M (1984)Pastizales pampeanos: impacto agropecuario.Phytocoenologia 12:201–218

[17] SORIANO A, LEON RJC, SALA OE, LAVADO RS, DEREGIBUSVA, CAUHEPE MA, SCAGLIA OA, VELAZQUEZ CA YLEMCOFF JH (1991) Río de la Plata grasslands. Pp.367–407 en: RT COUPLAND (ed) Ecosystems of the world.Vol. 8A. Natural grasslands. Elsevier, Amsterdam

[18] TUBARO PL Y GABELLI FM (1999) The decline of thePampas Meadowlark: difficulties of applying theIUCN criteria to neotropical grassland birds. Stud-ies in Avian Biology 19:250–257

[19] VICKERY PD, TUBARO PL, CARDOSODA SILVA JM,PETERJOHN BG, HERKERT JR Y CAVALCANTI RB (1999).Conservation of grassland birds in the WesternHemisphere. Studies in Avian Biology 19:2–26Z

[20] ZALBA SM Y COZZANI NC (2004) The impact of feralhorses on grassland bird communities in Argentina.Animal Conservation 7:35–44