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Subspecies · accepted · checked 2026-08-06

Larus glaucoides thayeri

Thayer's Gull

WoRMS 343922ITIS 1193102key itis:1193102
i

2026-08-05: worms_id 343922 via WoRMS TSN crosswalk (status accepted); itis:176828 deprecated in ITIS -> itis:1193102 (Larus glaucoides thayeri)

Silhouette · Sharon Wegner-Larsen · CC0 1.0 · PhyloPic, drawn from Larus argentatus

Size · not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).

adult Thayer's Gull photographed 21 Feb 2009 at Winthrop Harbor, IL, USA
Photo · Michael L. P. Retter · CC BY-SA 3.0 · commons

Thayer's gull is a subspecies of the Iceland gull. It is a large gull native to North America.W CalCOFI holds 30 observations of it in 1 dataset between 1988 and 2018.R

30
observations
30
records
30
sampling events
1988–2018
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 30 obs · 30 events · 1988–2018
    name used: Larus glaucoides thayeri Thayer's Gull · code THGU re-keyed

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:1193102%22