Thalasseus
crested terns
i
2026-08-06: worms_id 413038 via WoRMS TSN crosswalk (status accepted)
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 keyed to it directly
Every observation under it belongs to one of the taxa under it — 2 taxa · Thalasseus elegans most observed, in the fold below.
Ways inExplorerdb-queryRPythonThis page as JSON
Code and endpoints R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "itis:176928")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'itis:176928'").df()Read from taxa.json of release v2026.10.21, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.
How big is it not on record
Not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).
Under it 2 taxa · Thalasseus elegans most observed
- sp Thalasseus elegans Elegant Tern770
- sp Thalasseus maximus Royal Tern148
Lineage 10 ranks · Animalia to Laridae
Credits silhouette · photo · text
- Silhouette · T. Michael Keesey · CC BY-SA 3.0 · PhyloPic, drawn from Thalasseus bergii · source
- Photo · Ian Dugdale · CC BY 4.0 · inat · source
- Text · Wikipedia, “Thalasseus” · CC BY-SA 4.0 · revision 1325106844
Elsewhere Wikidata · iNaturalist · GBIF
The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.
Cite the release, v2026.10.21
Cite the release, v2026.10.21; each dataset's own citation, licence and DOI are on its page. How to cite ↗