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Colonia
Illustrated Checklist
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Native and Naturalized (291)
Exotic: Provisional (4)
Exotic: Escapee (7)
Additional Taxa (50)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Michael I Christie on 30 Jan 2023
- Rufous-sided/Red-and-white Crake Laterallus melanophaius/leucopyrrhusLast observed by Rafael Tosi on 10 Sep 2023
- Pantanal/Magellanic Snipe Gallinago paraguaiae/magellanicaLast observed by Amed Hernández on 24 Jul 2021
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Monica Rebuffo on 27 Aug 2022
- Brown-hooded/Gray-hooded Gull Chroicocephalus maculipennis/cirrocephalusLast observed by Eduardo Garcia on 14 Sep 2023
- Small-billed/White-crested Elaenia Elaenia parvirostris/albicepsLast observed by Fernando Saravia on 30 Apr 2022
- White-crested/Straneck's Tyrannulet Serpophaga subcristata/griseicapillaLast observed by Rafael Tosi on 26 Apr 2024
- White-rumped/Chilean Swallow Tachycineta leucorrhoa/leucopygaLast observed by Michael I Christie on 23 Jul 2023
- Screaming/Shiny Cowbird Molothrus rufoaxillaris/bonariensisLast observed by Caryl Guadalupe on 14 Apr 2024