CalCOFI.io CalCOFI.io open data ecosystem
Species · accepted · checked 2026-08-05

Rissa tridactyla

Black-Legged Kittiwake

WoRMS 137156ITIS 176875key itis:176875
i

2026-08-05: worms_id 137156 via WoRMS TSN crosswalk (status accepted)

Silhouette · Andy Wilson · CC0 1.0 · PhyloPic, drawn from Rissa tridactyla

Size · not on record: no authority the fetcher reads carries a length for this taxon.

Photograph of Rissa tridactyla
Photo · Donald Davesne · CC BY 4.0 · inat

The black-legged kittiwake is a seabird species in the gull family Laridae. This species was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae as Larus tridactylus.W CalCOFI holds 834 observations of it in 1 dataset between 1987 and 2020.R

834
observations
834
records
834
sampling events
1987–2020
years
1
datasets

Observed in
i

One row per dataset, one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.

  • Seabirds & Marine Mammals 834 obs · 834 events · 1987–2020
    name used: Rissa tridactyla Black-Legged Kittiwake · code BLKI

Groups

calcofi:seabirds

Ways in
i

Read from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

Explorerdb-query
ERDDAPCalCOFI's own server, the Seabirds & Marine Mammals table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/farallon_bird-mammal.html?&taxon_key=%22itis:176875%22