Annotated checklist of the birds of the Tucuruí region (Pará, Brazil): potential occurrence and confirmed records

This dataset is an annotated checklist of the birds of the Tucuruí region, in southeastern Pará, in the eastern Brazilian Amazon. It comprises 510 bird species across 26 orders and 66 families, each flagged for its occurrence condition. Most species (504) come from a regional potential-occurrence list and were cross-checked against records documented in citizen-science platforms and the scientific literature; a further 6 were added after confirmation by specific records in the area. For each species, the dataset provides the scientific name with authorship, Portuguese and English common names, higher classification (order, family, genus), global threat status (IUCN Red List), national threat status (Brazilian Official List of Threatened Species; MMA Ordinance No. 1.704/2026), CITES appendix, endemism, migratory condition, diet, and habitat. It also records coverage flags for eBird, WikiAves, and Henriques et al. (2021) for the area of the Tucuruí reservoir; these flags indicate only whether a species has a record in each source and do not reproduce those platforms' individual records. Nomenclature follows the CBRO and AviList. All 510 names were reconciled against the GBIF taxonomic backbone (every name matched exactly, with maximum confidence); the columns nomeAceitoGBIF and gbifTaxonKey document this equivalence species by species (in 8 cases the GBIF accepted name differs from the one used here, because the CBRO/AviList has already adopted more recent taxonomic treatments). One note is essential for correct use: this is, for the most part, a regional potential-occurrence list rather than a field inventory of confirmed records. The recordScope field distinguishes potential from confirmed for every species. The statusHistoricoTHR field flags 43 species that, according to Henriques et al. (2021), were recorded historically in the reservoir's area of influence but have gone unrecorded since the dam was impounded in 1984, and are therefore treated as candidates for local extinction. The material was originally developed to support a birdwatching-based environmental education project and is released in a Darwin Core compatible format for research, teaching, management, and birding.