---
title: "Black Guillemot"
description: "Cepphus grylle — Uccelli. The black guillemot or tystie (Cepphus grylle) is a medium-sized seabird of the Alcidae family, native throughout northern Atlantic coasts and eastern North American coasts."
canonical: https://animalchecklist.com/it/animal/black-guillemot
last_updated: 2026-09-20
---

# Black Guillemot

> Cepphus grylle — Uccelli. The black guillemot or tystie (Cepphus grylle) is a medium-sized seabird of the Alcidae family, native throughout northern Atlantic coasts and eastern North American coasts.

- Scientific name: *Cepphus grylle*
- Category: `birds` (Uccelli)
- Habitats: `sea` (Mare e costa)
- iNaturalist observations: 11118
- Wikidata: [Q212055](https://www.wikidata.org/wiki/Q212055)
- iNaturalist taxon: [4418](https://www.inaturalist.org/taxa/4418)

## Names

- en: Black Guillemot
- de: Gryllteiste
- es: Arao Aliblanco
- fr: Guillemot à miroir
- nl: Zwarte zeekoet
- pt: Airo-de-asa-branca
- pl: Nurnik zwyczajny

## Countries with the most observations

CA (2658), US (2334), GB (1249), IS (1011), NO (531), SJ (518), IE (419), RU (402), DK (147), GL (126), DE (110), FO (102)

## Summary

The black guillemot or tystie (Cepphus grylle) is a medium-sized seabird of the Alcidae family, native throughout northern Atlantic coasts and eastern North American coasts. It is resident in much of its range, but large populations from the high arctic migrate southwards in winter. The bird can be seen in and around its breeding habitat of rocky shores, cliffs and islands in single or smalls groups of pairs. They feed mainly by diving towards the sea floor feeding on fish, crustaceans or other benthic invertebrates. They are listed on the IUCN red list as a species of least concern.
Both sexes have very similar appearances…

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

## Photo

![Black Guillemot](https://animalchecklist.com/img/animals/black-guillemot/medium.jpg)

Photo: Jara de Hoog · CC0 · inaturalist — https://www.inaturalist.org/observations/151881797

## Machine access

`GET https://animalchecklist.com/api/v1/animals/black-guillemot?lang=it` — see [openapi.json](https://animalchecklist.com/openapi.json).