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#0731 · 🐦 birds

Caspian Tern

🇳🇱 Reuzenstern ·Hydroprogne caspia

LCleast concern 🐦 Birds 📍 in the Netherlands
Caspian Tern, photo 1 of 10
1/10 © Jef-B · CC BY-NC 4.0

what is it?

The Caspian tern ( Hydroprogne caspia ) is a species of tern, with a subcosmopolitan but scattered distribution. Despite its extensive range, it is monotypic of its genus, and has no accepted subspecies. The genus name is from Ancient Greek hudros , "water", and Latin progne , "swallow". The specific caspia is from Latin and, like the English name, refers to the Caspian Sea.

base stats

  • NL sightings 88iNaturalist, research grade
  • worldwide 48,391iNaturalist observations
  • weight 680 gadult, up to
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 88 times in the Netherlands on iNaturalist.
  • 48,391 observations worldwide on iNaturalist.
  • Weighs only about 680 g.
  • Scientifically named by Peter Simon Pallas in 1770 (256 years ago).

fact sheet

English
Caspian Tern
Nederlands
Reuzenstern
scientific name
Hydroprogne caspia
class
Aves
order
Charadriiformes
family
Laridae
IUCN Red List
LC · least concern
sightings in NL
88
sightings in Europe
3,230
sightings worldwide
48,391
GBIF records in NL
33,537
weight
680 g
length
—
lifespan
—
named
1770 by Peter Simon Pallas

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Laridae

Sources: iNaturalist taxon 144537, Wikidata Q27129, GBIF 2481236, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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