Genus · accepted · checked 2026-08-06

Thalasseus

crested terns

WoRMS 413038ITIS 176928key itis:176928

2026-08-06: worms_id 413038 via WoRMS TSN crosswalk (status accepted)

Silhouette · T. Michael Keesey · CC BY-SA 3.0 · PhyloPic, drawn from Thalasseus bergii

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).

Photograph of Thalasseus — Photo · Ian Dugdale · CC BY 4.0 · inat

Thalasseus, the crested terns, is a genus of eight species of medium-large to large terns in the family Laridae.W CalCOFI holds 918 observations of it in 1 dataset between 1988 and 2022, across 2 taxa under it.R

918
observations: 918
records: 1988–2022
years: 1
datasets: 2
species under it

Observed in

Nothing is keyed to this taxon directly — every observation under it belongs to one of the taxa below.

Under it · 2 taxa

sp Thalasseus elegans Elegant Tern770
sp Thalasseus maximus Royal Tern148

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/.

Explorer db-query

library(calcofi4r)
con <- cc_get_db()                      # the promoted release
tbl(con, "obs_bio") |> filter(taxon_key == "itis:176928")

Thalasseus

Observed in

Under it · 2 taxa

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

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/.