Lista comentada de las aves registradas entre el Canal Beagle e Isla de los Estados, Argentina

Jorge La Grotteria; M. Alejandra Sosa

doi:10.56178/na.vi70.1121

Articles Published 06 November 2025 https://doi.org/10.56178/na.vi70.1121

Annotated checklist of birds recorded between Beagle Channel and Isla de los Estados, Argentina

Le Maire Strait Mar Argentino Pelecanoides Procellaria westlandica

Jorge La Grotteria EcoRegistros. Martin H. Falco 328, Garín (1619), Escobar, Buenos Aires, Argentina | Comité Argentino de Registros Ornitológicos. Aves Argentinas. Matheu 1246/8 Buenos Aires (C1249 AAB), Argentina

M. Alejandra Sosa Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900, La Plata, Buenos Aires, Argentina

Abstract

Seabirds are key indicators of ocean ecosystems, yet knowledge of their distribution in the Beagle Channel, Le Maire Strait, and Isla de los Estados remains limited. From November 11–13, 2024, systematic surveys were conducted aboard the A.R.A. “Indómita”. A total of 22 species and 10,497 individuals were recorded. Diversity was highest in the Beagle Channel (H’=1.183), intermediate in northern Isla de los Estados (H’=0.7747), and lowest in Le Maire Strait (H’=0.1485), dominated by the Sooty Shearwater (Ardenna grisea). Significant findings include a Westland Petrel (Procellaria westlandica), an Endangered species with very rare occurrence in Argentine waters, and a strong concentration of Magellanic Diving-petrels (Pelecanoides magellani), suggesting a potential breeding site. These records provide new insights into seabird diversity and abundance in one of the least-studied regions of the southern Argentine Sea.

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References

Acha EM, Mianzan HW, Guerrero RA, Favero M, Bava J (2004) Marine fronts at the continental shelves of austral South America. Physical and ecological processes. Journal of Marine Systems 44: 83-105. https://doi.org/10.1016/j. jmarsys.2003.09.005
Antezana T (1999) Hydrographic features of Magellan and Fuegian inland passages and adjacent Subantarctic waters. Scientia Marina 63: 23-34
Balestrini C, Manzanella G, Lovrich GA (1998) Simulación de corrientes en el Canal Beagle y Bahía Ushuaia, mediante un modelo bidimensional. Servicio de Hidrografía Naval 98: 1-58
Balza U, Liljesthröm M, Pimper L, Franco‑Navarro I, Cañas‑Barrovecchio S, Zunino F, Domato I, Acardi S, Iturraspe R, Cano J, Raya‑Rey A (2022) Status of breeding birds at Observatorio and Goffré Islands, Argentina. Polar Biology 45: 667–673. https://doi.org/10.1007/s00300-022-03019-2
BirdLife International (2018) Species technical sheet: Procellaria westlandica. https://datazone.birdlife.org/species/factsheet/westland-petrel-procellaria-westlandica. Accedido el 15/3/2025
Birdlife International (2024) IUCN Red List for birds. https://datazone.birdlife.org/species/search. Accedido el 1/12/2024
Birdlife International (2025) Site technical sheet: Isla de los Estados - Banco Burdwood. https://datazone. birdlife.org/site/factsheet/isla-de-los-estados-islas-de-año-nuevo-e-islotes-adyacentes-iba-argentina. Accedido el 4/1/2025
Brinkley ES, Howell SNG, Force MP, Spear LB, Ainley DC (2000) Status of the Westland Petrel (Procellaria westlandica) off South America. Notornis 47(4): 179-183. https://doi.org/10.63172/702138gykzbe
Castellanos A (1935) Observaciones de algunas aves de Tierra del Fuego e Isla de los Estados. El Hornero 6(1): 22–35. https://doi.org/10.56178/eh.v6i1.287
Croxall JP, Butchart SHM, Lascelles B, Stattersfield AJ, Sullivan B, Symes A, Taylor P (2012) Seabird conservation status, threats and priority actions: a global assessment. Bird Conservation International 22(1): 1–34. https://doi.org/10.1017/S0959270912000020
Dias MP, Martin R, Pearmain EJ, Burfield IJ, Small C, Phillips RA, Yates O, Lascelles B, García Borboroglu P, Croxall JP (2019) Threats to seabirds: a global assessment. Biological conservation 237: 525-537. https://doi.org/10.1016/j.biocon.2019.06.033
Dodino SG (2020) Ecología trófica del Pingüino de Magallanes Spheniscus magellanicus en Isla de Los Estados y Canal Beagle: variación temporal, espacial y consistencias individuales. Tesis Doctoral. Universidad de Buenos Aires, Buenos Aires, Argentina
eBird (2025) eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York (URL: http://www.ebird.org)
EcoRegistros (2025) Base de datos de registros de la comunidad. https://www.ecoregistros.org. Accedido el 7/9/2025
Falabella V, Tamini L, García Borboroglu P, Frere E, Seco Pon JP, Simeone Cabrera A, Stanworth A, Suazo C, Campagna C (2019) Informe del Primer Taller Regional de Evaluación del Estado de Conservación de Especies para el Mar Patagónico según criterios de la Lista Roja de UICN: Aves Marinas. Foro para la Conservación del Mar Patagónico y áreas de influencia
Hammer Ø, Harper DAT, Ryan PD (2001) PAST: Paleontological Statistics software package for education and data análisis. Paleontologia Electronica 4(1): 1- 9
Isla F, Bujalesky G, Coronato A (1999) Procesos estuarinos en el Canal Beagle, Tierra del Fuego. Revista de la Asociación Geológica Argentina 54(4): 307-318
IUCN (2025) The IUCN Red List of Threatened Species. Version 2025-2. https://www.iucnredlist.org/. Accedido el 15/3/2025
Jehl JR (1974) The distribution and ecology of marine birds over the continental shelf of Argentina in winter. Transactions of the San Diego Society of Natural History 17(16): 217–234
La Grotteria J (2018) Comportamiento reproductivo de la Remolinera Negra (Cinclodes maculirostris). EcoRegistros Revista 8(11): 35-40
La Grotteria J, Sosa MA (2023) Lista comentada de las aves observadas en navegación entre Puerto Belgrano y la Ciudad Autónoma de Buenos Aires, Argentina. Nuestras Aves 68: 147-156. https://doi.org/10.56178/na.vi68.1012
López-Lanús B (2022) Guía Audiornis de las Aves de Argentina, fotos y sonidos. Identificación por características contrapuestas y marcas sobre imágenes. Quinta Edición. Audiornis Producciones. Buenos Aires
Montalti D, Orgeira JL (1998) Distribución de aves marinas en la costa patagónica argentina. Ornitología Neotropical 9(2): 193–199
Orgeira JL (2001) Distribución espacial de densidades de aves marinas en la plataforma continental argentina y Océano Atlántico Sur. Ornitologia Neotropical 12(1): 45–55
Pearman M, Areta JI (2020) Birds of Argentina and the South-west Atlantic. Field Guide. Helm, London
Phillips RA, Fort J, Dias MP (2023) Conservation status and overview of threats to seabirds. En: Young L, Vanderwerf E (eds) Conservation of marine birds. Academic Press, London, pp 33-56
Piatt JF, Sydeman WJ, Wiese F (2007) Introduction: A modern role for seabirds as indicators. Seabirds as indicators of marine ecosystems, Marine Ecology Progress Series 352: 199-204. https://doi.org/10.3354/meps07070
Quintana F, Schiavini A, Copello S (2005) Estado poblacional, ecología y conservación del Petrel Gigante del Sur (Macronectes giganteus) en Argentina. El Hornero 20(1): 25-34. https://doi.org/10.56178/eh.v20i1.817
Rabassa J, Heusser CJ, Stuckenrath R (1986) New data on Holocene sea transgression in the Beagle Channel: Tierra del Fuego, Argentina. En: Rabassa J (ed) Quaternary of South America & Antarctic Peninsula. CRC Press, London, pp 291-309
Raya Rey A, Balza U, Domato I, Salom A, Pütz K (2024) Breeding confirmation and habitat utilization of Sooty Shearwater (Ardenna grisea) on Isla de los Estados, Argentina. Polar Biology 47(10): 1159-1164. https://doi.org/10.1007/s00300-024-03285-2
Raya Rey A, Schiavini ACM (2000) Distribution, abundance and associations of seabirds in the Beagle Channel, Tierra del Fuego, Argentina. Polar Biology 23: 338-345. https://doi.org/10.1007/s003000050453
Rumboll MAE, Jehl Jr JR (1977) Observations on pelagic birds in the South Atlantic Ocean in the Austral Spring. Transactions of the San Diego Society of Natural History 19(1): 1-16
Savigny C (2021) Aves del Atlántico Sudoccidental & Antártida. Ediciones LBN, La Plata
Schiavini A, Yorio P (1995) Distribution and abundance of seabird colonies in the Argentine sector of the Beagle Channel, Tierra del Fuego. Marine Ornithology 23(1): 39-46. http://doi.org/10.5038/2074-1235.23.1.321
Spatz DR, Newton KM, Heinz R, Tershy B, Holmes ND, Butchart SHM, Croll DA (2014) The biogeography of globally threatened seabirds and island conservation opportunities: seabird conservation opportunities. Conservation Biology 28(5): 1282–1290. https://doi.org/10.1111/cobi.12279
Tickell LN, Woods RW (1972) Ornithological observations at sea in the South Atlantic Ocean, 1954-64. British Antarctic Survey Bulletin 31: 63-84
Veit RR (1995) Pelagic communities of seabirds in the South Atlantic Ocean. Ibis 137(1): 1-10. https://doi.org/10.1111/j.1474-919X.1995.tb03213.x
Votier SC, Sherley RB (2017) Seabirds. Current Biology 27(11): R448 - R450. https://doi.org/10.1016/j.cub.2017.01.042
Whitney BM, Stejskal DJ (1992) Procellaria westlandica en el Canal de Beagle. El Hornero 13(3): 252-254. https://doi.org/10.56178/eh.v13i3.1086
Žydelis R, Small C, French G (2013) The incidental catch of seabirds in gillnet fisheries: a global review. Biological Conservation 162: 76–88. https://doi.org/10.1016/j.biocon.2013.04.002

How to cite

Jorge La Grotteria, M. Alejandra Sosa (2025). Annotated checklist of birds recorded between Beagle Channel and Isla de los Estados, Argentina. Nuestras Aves, No. 70 (2025), 21-32. https://doi.org/10.56178/na.vi70.1121

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License: CC BY-NC 4.0

[1] Acha EM, Mianzan HW, Guerrero RA, Favero M, Bava J (2004) Marine fronts at the continental shelves of austral South America. Physical and ecological processes. Journal of Marine Systems 44: 83-105. https://doi.org/10.1016/j. jmarsys.2003.09.005

[2] Antezana T (1999) Hydrographic features of Magellan and Fuegian inland passages and adjacent Subantarctic waters. Scientia Marina 63: 23-34

[3] Balestrini C, Manzanella G, Lovrich GA (1998) Simulación de corrientes en el Canal Beagle y Bahía Ushuaia, mediante un modelo bidimensional. Servicio de Hidrografía Naval 98: 1-58

[4] Balza U, Liljesthröm M, Pimper L, Franco‑Navarro I, Cañas‑Barrovecchio S, Zunino F, Domato I, Acardi S, Iturraspe R, Cano J, Raya‑Rey A (2022) Status of breeding birds at Observatorio and Goffré Islands, Argentina. Polar Biology 45: 667–673. https://doi.org/10.1007/s00300-022-03019-2

[5] BirdLife International (2018) Species technical sheet: Procellaria westlandica. https://datazone.birdlife.org/species/factsheet/westland-petrel-procellaria-westlandica. Accedido el 15/3/2025

[6] Birdlife International (2024) IUCN Red List for birds. https://datazone.birdlife.org/species/search. Accedido el 1/12/2024

[7] Birdlife International (2025) Site technical sheet: Isla de los Estados - Banco Burdwood. https://datazone. birdlife.org/site/factsheet/isla-de-los-estados-islas-de-año-nuevo-e-islotes-adyacentes-iba-argentina. Accedido el 4/1/2025

[8] Brinkley ES, Howell SNG, Force MP, Spear LB, Ainley DC (2000) Status of the Westland Petrel (Procellaria westlandica) off South America. Notornis 47(4): 179-183. https://doi.org/10.63172/702138gykzbe

[9] Castellanos A (1935) Observaciones de algunas aves de Tierra del Fuego e Isla de los Estados. El Hornero 6(1): 22–35. https://doi.org/10.56178/eh.v6i1.287

[10] Croxall JP, Butchart SHM, Lascelles B, Stattersfield AJ, Sullivan B, Symes A, Taylor P (2012) Seabird conservation status, threats and priority actions: a global assessment. Bird Conservation International 22(1): 1–34. https://doi.org/10.1017/S0959270912000020

[11] Dias MP, Martin R, Pearmain EJ, Burfield IJ, Small C, Phillips RA, Yates O, Lascelles B, García Borboroglu P, Croxall JP (2019) Threats to seabirds: a global assessment. Biological conservation 237: 525-537. https://doi.org/10.1016/j.biocon.2019.06.033

[12] Dodino SG (2020) Ecología trófica del Pingüino de Magallanes Spheniscus magellanicus en Isla de Los Estados y Canal Beagle: variación temporal, espacial y consistencias individuales. Tesis Doctoral. Universidad de Buenos Aires, Buenos Aires, Argentina

[13] eBird (2025) eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York (URL: http://www.ebird.org)

[14] EcoRegistros (2025) Base de datos de registros de la comunidad. https://www.ecoregistros.org. Accedido el 7/9/2025

[15] Falabella V, Tamini L, García Borboroglu P, Frere E, Seco Pon JP, Simeone Cabrera A, Stanworth A, Suazo C, Campagna C (2019) Informe del Primer Taller Regional de Evaluación del Estado de Conservación de Especies para el Mar Patagónico según criterios de la Lista Roja de UICN: Aves Marinas. Foro para la Conservación del Mar Patagónico y áreas de influencia

[16] Hammer Ø, Harper DAT, Ryan PD (2001) PAST: Paleontological Statistics software package for education and data análisis. Paleontologia Electronica 4(1): 1- 9

[17] Isla F, Bujalesky G, Coronato A (1999) Procesos estuarinos en el Canal Beagle, Tierra del Fuego. Revista de la Asociación Geológica Argentina 54(4): 307-318

[18] IUCN (2025) The IUCN Red List of Threatened Species. Version 2025-2. https://www.iucnredlist.org/. Accedido el 15/3/2025

[19] Jehl JR (1974) The distribution and ecology of marine birds over the continental shelf of Argentina in winter. Transactions of the San Diego Society of Natural History 17(16): 217–234

[20] La Grotteria J (2018) Comportamiento reproductivo de la Remolinera Negra (Cinclodes maculirostris). EcoRegistros Revista 8(11): 35-40

[21] La Grotteria J, Sosa MA (2023) Lista comentada de las aves observadas en navegación entre Puerto Belgrano y la Ciudad Autónoma de Buenos Aires, Argentina. Nuestras Aves 68: 147-156. https://doi.org/10.56178/na.vi68.1012

[22] López-Lanús B (2022) Guía Audiornis de las Aves de Argentina, fotos y sonidos. Identificación por características contrapuestas y marcas sobre imágenes. Quinta Edición. Audiornis Producciones. Buenos Aires

[23] Montalti D, Orgeira JL (1998) Distribución de aves marinas en la costa patagónica argentina. Ornitología Neotropical 9(2): 193–199

[24] Orgeira JL (2001) Distribución espacial de densidades de aves marinas en la plataforma continental argentina y Océano Atlántico Sur. Ornitologia Neotropical 12(1): 45–55

[25] Pearman M, Areta JI (2020) Birds of Argentina and the South-west Atlantic. Field Guide. Helm, London

[26] Phillips RA, Fort J, Dias MP (2023) Conservation status and overview of threats to seabirds. En: Young L, Vanderwerf E (eds) Conservation of marine birds. Academic Press, London, pp 33-56

[27] Piatt JF, Sydeman WJ, Wiese F (2007) Introduction: A modern role for seabirds as indicators. Seabirds as indicators of marine ecosystems, Marine Ecology Progress Series 352: 199-204. https://doi.org/10.3354/meps07070

[28] Quintana F, Schiavini A, Copello S (2005) Estado poblacional, ecología y conservación del Petrel Gigante del Sur (Macronectes giganteus) en Argentina. El Hornero 20(1): 25-34. https://doi.org/10.56178/eh.v20i1.817

[29] Rabassa J, Heusser CJ, Stuckenrath R (1986) New data on Holocene sea transgression in the Beagle Channel: Tierra del Fuego, Argentina. En: Rabassa J (ed) Quaternary of South America & Antarctic Peninsula. CRC Press, London, pp 291-309

[30] Raya Rey A, Balza U, Domato I, Salom A, Pütz K (2024) Breeding confirmation and habitat utilization of Sooty Shearwater (Ardenna grisea) on Isla de los Estados, Argentina. Polar Biology 47(10): 1159-1164. https://doi.org/10.1007/s00300-024-03285-2

[31] Raya Rey A, Schiavini ACM (2000) Distribution, abundance and associations of seabirds in the Beagle Channel, Tierra del Fuego, Argentina. Polar Biology 23: 338-345. https://doi.org/10.1007/s003000050453

[32] Rumboll MAE, Jehl Jr JR (1977) Observations on pelagic birds in the South Atlantic Ocean in the Austral Spring. Transactions of the San Diego Society of Natural History 19(1): 1-16

[33] Savigny C (2021) Aves del Atlántico Sudoccidental & Antártida. Ediciones LBN, La Plata

[34] Schiavini A, Yorio P (1995) Distribution and abundance of seabird colonies in the Argentine sector of the Beagle Channel, Tierra del Fuego. Marine Ornithology 23(1): 39-46. http://doi.org/10.5038/2074-1235.23.1.321

[35] Spatz DR, Newton KM, Heinz R, Tershy B, Holmes ND, Butchart SHM, Croll DA (2014) The biogeography of globally threatened seabirds and island conservation opportunities: seabird conservation opportunities. Conservation Biology 28(5): 1282–1290. https://doi.org/10.1111/cobi.12279

[36] Tickell LN, Woods RW (1972) Ornithological observations at sea in the South Atlantic Ocean, 1954-64. British Antarctic Survey Bulletin 31: 63-84

[37] Veit RR (1995) Pelagic communities of seabirds in the South Atlantic Ocean. Ibis 137(1): 1-10. https://doi.org/10.1111/j.1474-919X.1995.tb03213.x

[38] Votier SC, Sherley RB (2017) Seabirds. Current Biology 27(11): R448 - R450. https://doi.org/10.1016/j.cub.2017.01.042

[39] Whitney BM, Stejskal DJ (1992) Procellaria westlandica en el Canal de Beagle. El Hornero 13(3): 252-254. https://doi.org/10.56178/eh.v13i3.1086

[40] Žydelis R, Small C, French G (2013) The incidental catch of seabirds in gillnet fisheries: a global review. Biological Conservation 162: 76–88. https://doi.org/10.1016/j.biocon.2013.04.002