---
title: "Trinta-réis-grande"
description: "Phaetusa simplex — Aves. The large-billed tern (Phaetusa simplex) is a species of tern in the family Laridae."
canonical: https://animalchecklist.com/pt/animal/large-billed-tern
last_updated: 2026-09-20
---

# Trinta-réis-grande

> Phaetusa simplex — Aves. The large-billed tern (Phaetusa simplex) is a species of tern in the family Laridae.

- Scientific name: *Phaetusa simplex*
- Category: `birds` (Aves)
- Habitats: `freshwater` (Lagos e rios)
- iNaturalist observations: 4364
- Wikidata: [Q1073630](https://www.wikidata.org/wiki/Q1073630)
- iNaturalist taxon: [4569](https://www.inaturalist.org/taxa/4569)

## Names

- en: Large-billed Tern
- de: Großschnabelseeschwalbe
- es: Atí
- fr: Sterne à gros bec
- nl: Grootsnavelstern
- pt: Trinta-réis-grande
- pl: Rybitwa amazońska

## Countries with the most observations

BR (1655), AR (798), PE (531), CO (524), BO (218), US (107), EC (77), TT (72), VE (47), UY (46), PY (32), GY (29)

## Summary

The large-billed tern (Phaetusa simplex) is a species of tern in the family Laridae. It is placed the monotypic genus Phaetusa. It is found in most of South America (east of the Andes and north of the Pampas). It has occurred as a vagrant in Aruba, Bermuda, Cuba, Panama and the United States. Its natural habitats are rivers and freshwater lakes.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Large-billed_tern

## Photo

![Trinta-réis-grande](https://animalchecklist.com/img/animals/large-billed-tern/medium.jpg)

Photo: Fernando Sessegolo · CC0 · inaturalist — https://www.inaturalist.org/observations/336020255

## Machine access

`GET https://animalchecklist.com/api/v1/animals/large-billed-tern?lang=pt` — see [openapi.json](https://animalchecklist.com/openapi.json).