Species · accepted · checked 2026-08-06

Nannopterum auritum

Double-Crested Cormorant

WoRMS 159059ITIS 1255070key itis:1255070

194
observations: 194
sampling events: 1987–2018
years: 1
datasets

Observed in

Seabirds & Marine Mammals 194 obs · 194 events · 1987–2018
name used: Nannopterum auritum Double-Crested Cormorant · code DCCO re-keyed

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.

Groups

calcofi:seabirds

Note from the crosswalk

2026-08-05: worms_id 159059 via WoRMS TSN crosswalk (status accepted); itis:174717 deprecated in ITIS -> itis:1255070 (Nannopterum auritum)

Ways in

Explorermaps, sections and time series of this taxon — opens prefilled
https://calcofi.io/explore/?taxon=itis:1255070
db-querySQL in your browser — the shell opens with this query
https://calcofi.io/db-query/?sql=SELECT+%2A+FROM+__TBL%3Aobs_bio__+WHERE+taxon_key+%3D+%27itis%3A1255070%27+LIMIT+100%3B
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:1255070%22

library(calcofi4r)
con <- cc_get_db()                      # the promoted release
tbl(con, "obs_bio") |> filter(taxon_key == "itis:1255070")

Python

import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'itis:1255070'").df()

This page as data

JSONthis taxon's entry of the release record, verbatim
https://calcofi.io/species/itis-1255070.json

Read from taxa.json of release v2026.09.06, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.