Thalasseus maximus
Royal Tern
i
2026-08-06: worms_id 413040 via WoRMS TSN crosswalk (status accepted) 2026-08-05: worms_id 413040 via WoRMS TSN crosswalk (status accepted); WoRMS Sterna maxima unaccepted -> Thalasseus maximus; itis:176922 deprecated in ITIS -> itis:824142 (Thalasseus maximus)
The royal tern is a tern in the family Laridae. The species is endemic to the Americas, though vagrants have been identified in Europe.W CalCOFI holds 148 observations of it in 1 dataset between 1988 and 2022.R
- 148
- observations
- 148
- records
- 148
- sampling events
- 1988–2022
- years
- 1
- datasets
- 53 cm
- max length
Observed in 1 dataseti
One row per dataset, and beside it 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.
i
One row per dataset, and beside it 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.
-
name used: Thalasseus maximus Royal Tern · code
ROYTre-keyed
Ways inExplorerdb-queryERDDAPRPythonThis page as JSON
Code and endpoints ERDDAP · R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "itis:824142")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'itis:824142'").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 53 cm max
Every mark is a measured length with its own source — hover one to read it. The reference objects are _data/size_reference.csv: two of them, the 505 µm bongo mesh and the net's ring, are CalCOFI's own sampling gear.
Lineage 11 ranks · Animalia to Thalasseus
Credits silhouette · photo · text · length
- Silhouette · Andy Wilson · CC0 1.0 · PhyloPic, drawn from Thalasseus maximus · source
- Photo · EyeLoveBirds from Vancouver, Canada · CC BY-SA 2.0 · commons · source
- Text · Wikipedia, “Royal tern” · CC BY-SA 4.0 · revision 1362867660
- Length · sealifebase
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Elsewhere Wikidata · iNaturalist · GBIF · eBird
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 ↗