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#0661 · 🐦 birds

Tawny Owl

🇳🇱 Bosuil ·Strix aluco

LCleast concern 🐦 Birds 📍 in the Netherlands
Tawny Owl, photo 1 of 10
1/10 © caroline legg · CC BY 4.0

what is it?

The tawny owl or brown owl ( Strix aluco ) is a stocky, medium-sized owl commonly found in woodlands across much of Eurasia. Its underparts are pale with dark streaks, and the upperparts are either brown or grey. Several of the eleven recognised subspecies have both variants. The nest is typically in a tree hole where it can protect its eggs and young against potential predators. This owl is non-migratory and highly territorial. Many young birds starve if...

base stats

  • NL sightings 253iNaturalist, research grade
  • worldwide 24,598iNaturalist observations
  • weight 524 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 253 times in the Netherlands on iNaturalist.
  • 24,598 observations worldwide on iNaturalist.
  • Weighs only about 524 g.
  • Scientifically named in 1758 (268 years ago).

fact sheet

English
Tawny Owl
Nederlands
Bosuil
scientific name
Strix aluco
class
Aves
order
Strigiformes
family
Strigidae
IUCN Red List
LC · least concern
sightings in NL
253
sightings in Europe
19,441
sightings worldwide
24,598
GBIF records in NL
55,988
weight
524 g
length
—
lifespan
—
named
1758

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

relatives· Strigidae

Sources: iNaturalist taxon 19898, Wikidata Q25756, GBIF 9282206, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

stan runge 8e35a58 source