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#0649 · 🐦 birds

Smew

🇳🇱 Nonnetje ·Mergellus albellus

LCleast concern 🐦 Birds 📍 in the Netherlands
Smew, photo 1 of 7
1/7 © Greg Lasley · CC BY-NC 4.0

what is it?

The smew ( Mergellus albellus ) is a species of duck, and is the only living member of the genus Mergellus . Mergellus is a diminutive of Mergus and albellus is from Latin albus "white". This genus is closely related to Mergus and is sometimes included in it, though it might be closer to the goldeneyes ( Bucephala ). The smew has hybridized with the common goldeneye ( B. clangula ).

base stats

  • NL sightings 297iNaturalist, research grade
  • worldwide 9,129iNaturalist observations
  • weight 652 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 297 times in the Netherlands on iNaturalist.
  • 9,129 observations worldwide on iNaturalist.
  • Weighs only about 652 g.
  • Scientifically named in 1758 (268 years ago).

fact sheet

English
Smew
Nederlands
Nonnetje
scientific name
Mergellus albellus
class
Aves
order
Anseriformes
family
Anatidae
IUCN Red List
LC · least concern
sightings in NL
297
sightings in Europe
6,360
sightings worldwide
9,129
GBIF records in NL
152,150
weight
652 g
length
—
lifespan
—
named
1758

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

relatives· Anatidae

Sources: iNaturalist taxon 7192, Wikidata Q200646, GBIF 2498285, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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