Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil
We provide the first insights on the territorial behavior of the Chestnut Seedeater ( Sporophila cinnamomea ), a vulnerable, migratory species inhabiting the Pampas grasslands of South America. Our study aims to describe and estimate territory size, calculate rates of philopatry and breeding dispers...
| Κύριοι συγγραφείς: | , , |
|---|---|
| Μορφή: | Άρθρο |
| Γλώσσα: | English |
| Έκδοση: |
Resilience Alliance
2024-09-01
|
| Σειρά: | Journal of Field Ornithology |
| Θέματα: | |
| Διαθέσιμο Online: | https://journal.afonet.org/vol95/iss3/art6 |
| _version_ | 1827097045828108288 |
|---|---|
| author | Jonas Rafael Rodrigues Rosoni Caio J. Carlos Carla Suertegaray Fontana |
| author_facet | Jonas Rafael Rodrigues Rosoni Caio J. Carlos Carla Suertegaray Fontana |
| author_sort | Jonas Rafael Rodrigues Rosoni |
| collection | DOAJ |
| description | We provide the first insights on the territorial behavior of the Chestnut Seedeater ( Sporophila cinnamomea ), a vulnerable, migratory species inhabiting the Pampas grasslands of South America. Our study aims to describe and estimate territory size, calculate rates of philopatry and breeding dispersal, describe the main aspects of the species’ territorial behavior, and characterize nest sites. Over four breeding seasons (2018–2022), we monitored 70 adult individuals across two grassland areas of southern Brazil. We applied the Kernel Density Estimation method to estimate the territory size and core areas and analyzed the composition and floristic structure of nest sites. The average size of breeding territories was 1.91 ± 0.59 ha, and the core areas were 0.23 ± 0.05 ha. Remarkably, the average size of territories of philopatric males did not significantly vary in consecutive breeding seasons. The breeding philopatry rate was 51.5%. Moreover, we observed no significant differences in dispersion distance among consecutive breeding seasons, suggesting stable breeding site fidelity. Analysis of nest sites identified 14 plant species exhibiting higher abundance, with dense and tall vegetation prevalent. These findings underscore the importance of understanding population dynamics and the composition and structure of vegetation within Chestnut Seedeater nest sites as initial steps toward developing effective management and conservation strategies for their habitats. |
| first_indexed | 2025-03-20T07:25:26Z |
| format | Article |
| id | doaj.art-db8601f475b64a4e957ef5bc1bac38a2 |
| institution | Directory Open Access Journal |
| issn | 1557-9263 |
| language | English |
| last_indexed | 2025-03-20T07:25:26Z |
| publishDate | 2024-09-01 |
| publisher | Resilience Alliance |
| record_format | Article |
| series | Journal of Field Ornithology |
| spelling | doaj.art-db8601f475b64a4e957ef5bc1bac38a22024-09-30T14:35:05ZengResilience AllianceJournal of Field Ornithology1557-92632024-09-01953610.5751/JFO-00522-950306522Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern BrazilJonas Rafael Rodrigues Rosoni0Caio J. Carlos1Carla Suertegaray Fontana2Laboratório de Comportamento, Ecologia e Filogenia de Aves Aquáticas (CEFALAB) & Programa de Pós-Graduação em Biologia Animal, Universidade Federal do Rio Grande do Sul, Rio Grande do Sul, BrazilLaboratório de Comportamento, Ecologia e Filogenia de Aves Aquáticas (CEFALAB) & Programa de Pós-Graduação em Biologia Animal, Universidade Federal do Rio Grande do Sul, Rio Grande do Sul, BrazilPrograma de Pós-Graduação em Biodiversidade Animal, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Rio Grande do Sul, BrazilWe provide the first insights on the territorial behavior of the Chestnut Seedeater ( Sporophila cinnamomea ), a vulnerable, migratory species inhabiting the Pampas grasslands of South America. Our study aims to describe and estimate territory size, calculate rates of philopatry and breeding dispersal, describe the main aspects of the species’ territorial behavior, and characterize nest sites. Over four breeding seasons (2018–2022), we monitored 70 adult individuals across two grassland areas of southern Brazil. We applied the Kernel Density Estimation method to estimate the territory size and core areas and analyzed the composition and floristic structure of nest sites. The average size of breeding territories was 1.91 ± 0.59 ha, and the core areas were 0.23 ± 0.05 ha. Remarkably, the average size of territories of philopatric males did not significantly vary in consecutive breeding seasons. The breeding philopatry rate was 51.5%. Moreover, we observed no significant differences in dispersion distance among consecutive breeding seasons, suggesting stable breeding site fidelity. Analysis of nest sites identified 14 plant species exhibiting higher abundance, with dense and tall vegetation prevalent. These findings underscore the importance of understanding population dynamics and the composition and structure of vegetation within Chestnut Seedeater nest sites as initial steps toward developing effective management and conservation strategies for their habitats.https://journal.afonet.org/vol95/iss3/art6grassland birdneotropical birdsnest site selectionpampasphilopatrysongbirdsterritorial behavior |
| spellingShingle | Jonas Rafael Rodrigues Rosoni Caio J. Carlos Carla Suertegaray Fontana Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil Journal of Field Ornithology grassland bird neotropical birds nest site selection pampas philopatry songbirds territorial behavior |
| title | Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil |
| title_full | Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil |
| title_fullStr | Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil |
| title_full_unstemmed | Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil |
| title_short | Territoriality, breeding philopatry, and nest site selection of Chestnut Seedeater ( Sporophila cinnamomea ) in grasslands of southern Brazil |
| title_sort | territoriality breeding philopatry and nest site selection of chestnut seedeater sporophila cinnamomea in grasslands of southern brazil |
| topic | grassland bird neotropical birds nest site selection pampas philopatry songbirds territorial behavior |
| url | https://journal.afonet.org/vol95/iss3/art6 |
| work_keys_str_mv | AT jonasrafaelrodriguesrosoni territorialitybreedingphilopatryandnestsiteselectionofchestnutseedeatersporophilacinnamomeaingrasslandsofsouthernbrazil AT caiojcarlos territorialitybreedingphilopatryandnestsiteselectionofchestnutseedeatersporophilacinnamomeaingrasslandsofsouthernbrazil AT carlasuertegarayfontana territorialitybreedingphilopatryandnestsiteselectionofchestnutseedeatersporophilacinnamomeaingrasslandsofsouthernbrazil |