Scuba Season
Least Concern· population trend unknown· assessed 2018

Black Guillemot

Cepphus grylle

Sighting evidence at Vestmanna Bird Cliffs, Faroe Islands

Black Guillemot

Evidence at this site

17 records within 25 km

Confidence: medium

Seasonality

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How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites