Status of Nearctic and Austral migratory birds in the Brazilian state of Acre, Southwestern Amazon: insights from citizen science contributions

Alnizia Galdino Pereira; Kaylane de Oliveira Silva; Luana Alencar; Ighor Dienes Mendes; Edson Guilherme

doi:10.56178/eh.v41i1.1531

Artículos Publicado 31 marzo 2026 https://doi.org/10.56178/eh.v41i1.1531

Estado de las aves migratorias neárticas y australes en el estado brasileño de Acre, en el suroeste de la Amazonia: conclusiones extraídas de las contribuciones de la ciencia ciudadana

Amazonía aves ciencia ciudadana ruta migratoria

Alnizia Galdino Pereira Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil

Kaylane de Oliveira Silva Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil

Luana Alencar Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil

Ighor Dienes Mendes Laboratório de Pesquisas Paleontológicas, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil

Edson Guilherme Laboratório de Ornitologia, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil | Laboratório de Pesquisas Paleontológicas, Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, Brazil

Resumen

Las aves migratorias realizan movimientos estacionales entre las zonas de reproducción y las zonas no reproductoras en busca de condiciones climáticas y alimenticias favorables. En América del Sur se reconocen dos grandes sistemas migratorios: el neártico y el austral. El estado brasileño de Acre, situado en el suroeste de la Amazonia, sirve de escala estratégica para ambos grupos, pero las crecientes presiones antropogénicas amenazan estos corredores. Por lo tanto, comprender la dinámica de la migración es esencial para la planificación de la conservación. Este estudio analizó los patrones temporales de las especies de aves migratorias neárticas y australes en Acre y evaluó su grado de superposición temporal. Los datos se obtuvieron de plataformas de ciencia ciudadana, con registros fotográficos filtrados por especie y mes y visualizados mediante mapas de calor. Los registros se clasificaron en meses reproductivos y no reproductivos, y las diferencias se comprobaron mediante la prueba no paramétrica U de Mann-Whitney (p < 0.05). Se analizaron un total de 1554 imágenes que representaban 61 especies migratorias (31 neárticas y 30 australes). El Pitotoy Solitario (Tringa solitaria) mostró la mayor frecuencia de registros entre los migrantes neárticos, mientras que el Churrinche (Pyrocephalus rubinus) prevaleció dentro del grupo austral. El análisis fenológico reveló ventanas estacionales distintas: las aves migratorias neárticas se observaron principalmente entre septiembre y marzo, mientras que las migratorias australes se registraron entre marzo y septiembre, con un solapamiento mínimo. Algunas especies, como el Chiví-chiví (Vireo chivi) y Tuquito Gris (Empidonomus aurantioatrocristatus), se observaron durante casi todo el año, lo que sugiere estrategias complejas que incluyen la migración parcial o la coexistencia de poblaciones residentes y migratorias. Estos hallazgos ponen de relieve el papel de Acre como corredor migratorio dinámico y demuestran el valor de la ciencia ciudadana en el seguimiento de la biodiversidad aviar en regiones remotas, lo que refuerza su importancia para las estrategias de conservación.

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Referencias

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Cómo citar

Alnizia Galdino Pereira, Kaylane de Oliveira Silva, Luana Alencar, Ighor Dienes Mendes, Edson Guilherme (2026). Estado de las aves migratorias neárticas y australes en el estado brasileño de Acre, en el suroeste de la Amazonia: conclusiones extraídas de las contribuciones de la ciencia ciudadana. El Hornero, Vol. 41 Núm. 1 (2026), 63-74. https://doi.org/10.56178/eh.v41i1.1531

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[1] Acre, Governo do Estado (2014) Caderno das Unidades de Gestão de Recursos Hídricos do Acre / Secretária de Estado do Meio Ambiente. Rio Branco: SEMA

[2] Acre, Governo do Estado (2015) Zoneamento Ecológico-Econômico do Estado do Acre, Fase II. Rio Branco: SEMA

[3] Alves MAS (2007) Sistemas de migrações de aves em ambientes terrestres no Brasil: exemplos, lacunas e propostas para o avanço do conhecimento. Revista Brasileira de Ornitologia 15(2):231-238

[4] AviList Core Team (2025) AviList: The Global Avian Checklist, v2025. https://doi.org/10.2173/avilist.v2025

[5] Barbosa KVC, Develey PF, Ribeiro MC, Jahn AE (2021) The contribution of citizen science to research on migratory and urban birds in Brazil. Ornithology Research 29:1-11. https://doi.org/10.1007/s43388-020-00031-0

[6] Billerman SM, Keeney BK, Kirwan GM, Medrano F, Sly ND, Smith MG (2026) Birds of the World. Cornell Laboratory of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow

[7] Campos CEC, Naiff RH, Araújo AS (2008) Censo de aves migratórias (Charadriidae e Scolopacidae) da Porção Norte da Bacia Amazônica, Macapá, Amapá, Brasil. Ornithologia 3:38-46

[8] Canassa GG (2022) Migração austral do Príncipe (Pyrocephalus rubinus: Aves): uma avaliação através da ciência cidadã. Universidade Estadual Paulista, Rio Claro. [URL: http://hdl.handle.net/11449/216499]

[9] Carmi O, Witt CC, Jaramillo A, Dumbacher JP (2016) Phylogeography of the Vermilion Flycatcher species complex: multiple speciation events, shifts in migratory behavior, and an apparent extinction of a Galápagos-endemic bird species. Molecular Phylogenetics and Evolution 102:152-173. https://doi.org/10.1016/j.ympev.2016.05.029

[10] Carroll C, Furrow RE, Gerhart LM (2025) Consistency and Validity of Participatory Science Data: A Comparison of Seasonality Patterns of Northern California and Nevada Birds Across eBird and iNaturalist. Citizen Science: Theory and Practice 10(1):1-14. https://doi.org/10.5334/cstp.825

[11] Cestari C (2015) Coexistence between Nearctic-Neotropical migratory shorebirds and humans on urban beaches of the Southern Hemisphere: a current conservation challenge in developing countries. Urban Ecosystems 18:285-291. https://doi.org/10.1007/s11252-014-0399-3

[12] Chesser RT (1994) Migration in South America: an overview of the austral system. Bird Conservation International 4(2-3):91-107. https://doi.org/10.1017/S0959270900002690

[13] Daly DC, Silveira M (2008) Primeiro catálogo da flora do Acre, Brasil. Editora da Universidade Federal do Acre – Edufac. Rio Branco, Acre. Pp. 42

[14] Dennis EB, Diana A, Matechou E, Morgan BJ (2025) Efficient statistical inference methods for assessing changes in species’ populations using citizen science data. Journal of the Royal Statistical Society Series A: Statistics in Society 188(3):641-657. https://doi.org/10.1093/jrsssa/qnae105

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

[16] El Hindi TS, Jahn AE, Tuero DT, Pizo MA, Silveira NSD (2023) Projected population- and season-dependent impacts of climate change on a migratory songbird in South America. Frontiers in Bird Science 2:1214458. https://doi.org/10.3389/fbirs.2023.1214458

[17] Ellison KS, Wolf BO, Jones SL (2021) Vermilion Flycatcher (Pyrocephalus rubinus), version 1.1. In: Poole AF (ed) Birds of the World. Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.verfly.01.1

[18] Farmer A, Holmes RT, Pitelka FA (2020) Pectoral Sandpiper (Calidris melanotos), version 1.0. In: Billerman SM (ed) Birds of the World. Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pecsan.01

[19] Fuentes M, Van Doren BM, Fink D, Sheldon D (2023) BirdFlow: Learning seasonal bird movements from eBird data. Methods in Ecology and Evolution 14(3):923-938. https://doi.org/10.1111/2041-210X.14052

[20] Guilherme E (2001) Comunidade de Aves do Campus e Parque Zoobotânico da Universidade Federal do Acre, Brasil. Tangara 1(2):57-73

[21] Guilherme E (2012) Birds of the Brazilian state of Acre: Diversity, zoogeography, and conservation. Revista Brasileira de Ornitologia 20(4):393-442. [URL: http://www.revbrasilornitol.com.br/BJO/article/view/0149]

[22] Guilherme E (2016) Aves do Acre. Editora da Universidade Federal do Acre – Edufac. Rio Branco, Acre. Pp. 897

[23] Hammer Ø, Harper DA (2001) Past: paleontological statistics software package for education and data analysis. Palaeontologia Electronica 4(1):1-9. [URL: http://palaeo-electronica.org/2001_1/past/issue1_01.htm]

[24] Humple DL, Cormier RL, Richardson TW, Burnett RD, Seavy NE, Dybala KE, Gardali T (2020) Migration tracking reveals geographic variation in the vulnerability of a Nearctic-Neotropical migrant bird. Scientific Reports 10:5483. https://doi.org/10.1038/s41598-020-62132-6

[25] iNaturalist (2025) iNaturalist: an online social network of people sharing biodiversity information to help each other learn about nature. [URL: https://www.inaturalist.org/] (10/09/2025)

[26] Jahn AE, Levey DJ, Smith KG (2004) Reflections across hemispheres: Austral migration is key to a system-wide approach to New World bird migration. The Auk 121(4):1005-1013. https://doi.org/10.1093/auk/121.4.1005

[27] Jahn AE, Levey DJ, Cueto VR, Ledezma JP, Tuero DT, Fox JW, Masson D (2013) Long-distance bird migration within South America revealed by light-level geolocators. The Auk 130(2):223-229. https://doi.org/10.1525/auk.2013.12077

[28] Jahn AE, Seavy NE, Bejarano V, Benavides Guzmán M, Provinciato ICC, Pizo MA, MacPherson M (2016) Intra-tropical migration and wintering areas of Fork-tailed Flycatchers (Tyrannus savana) breeding in São Paulo, Brazil. Revista Brasileira de Ornitologia 24(2):116-121

[29] Jahn AE, Cueto VR, Fontana CS, Guaraldo AC, Levey DJ, Marra PM, Ryder TB (2020) Bird migration within the Neotropics. The Auk 137(4):ukaa033. https://doi.org/10.1093/auk/ukaa033

[30] Jahn AE, Tuero DT (2020) Fork-tailed Flycatcher (Tyrannus savana), version 1.0. In: Schulenberg TS (ed) Birds of the World. Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.fotfly.01

[31] Johnston A, Hochachka WM, Strimas-Mackey ME, Gutierrez VR, Robinson OJ, Miller ET, Auer T, Kelling ST, Fink D (2021) Analytical guidelines to increase the value of community science data: An example using eBird data to estimate species distribution. bioRxiv:574392. Diversity and Distributions 27:1265-1277. https://doi.org/10.1111/ddi.13271

[32] Joseph L (1996) Preliminary climatic overview of migration patterns in South American austral migrant passerines. Ecotropica 2(2):185‑193

[33] Kelling S, Johnston A, Bonn A, Fink D, Ruiz-Gutierrez V, Bonney R, Fernandez M, Hochachka WM, Julliard R, Kraemer R, Guralnick R (2019) Using semistructured surveys to improve citizen science data quality. BioScience 69(3):170-179. https://doi.org/doi/10.1093/biosci/biz010

[34] Kirwan GM (2020) Chivi Vireo (Vireo chivi), version 1.1. In: Schulenberg TS, Keeney BK, Billerman SM, Rodewald PG (eds) Birds of the World. Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.chivir1.01.1

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