Tengmalm's Owl

Aegolius funereus (Linnaeus, 1758) TENOW 7700
Family: Strigiformes > Strigidae

A diminutive resident of northern and alpine forests in both the New and Old Worlds, Tengmalm's Owl is occasionally irruptive in its movements, and some individuals have made it as far as (northern) Britain, but it has been extremely rare in recent decades.

Select a topic for more facts and statistics about the Tengmalm's Owl

  • Breeding
  • Winter
128 records observations recorded by BTO surveyors
128 records


128 records observations recorded by BTO surveyors
128 records



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Status and Trends

Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.


This species can be found on the following statutory and conservation listings and schedules.


We have no population estimates for this scarce species.


This vagrant is too rarely reported to map distribution. Recent records have been on the Northern Isles.

Occupied 10-km squares in UK

European Distribution Map

European Breeding Bird Atlas 2


Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.


View a summary of recoveries in the Online Ringing Report.

Foreign locations of birds ringed or recovered in Britain & Ireland

Foreign locations of Tengmalm's Owl ringed or recovered in Britain & Ireland
Encountered in: Winter (Nov-Feb); Spring (Mar-Apr); Summer (May-Jul); Autumn (Aug-Oct)


Lifecycle and body size information about Tengmalm's Owl, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.


Sample sizes are too small to report Productivity and Nesting statistics for this species.


Sample sizes are too small to report Biometrics for this species.

Feather measurements and photos on featherbase


For information in another language (where available) click on a linked name

Catalan: mussol pirinenc
Czech: sýc rousný
Danish: Perleugle
Dutch: Ruigpootuil
Estonian: karvasjalg-kakk e. laanekakk
Finnish: helmipöllö
French: Nyctale de Tengmalm
German: Raufußkauz
Hungarian: gatyáskuvik
Icelandic: Skálmugla
Italian: Civetta capogrosso
Latvian: bikšainais apogs
Lithuanian: paprastoji lutute
Norwegian: Perleugle
Polish: wlochatka (zwyczajna)
Portuguese: mocho-funéreo
Slovak: pôtik kapcavý
Slovenian: koconogi cuk
Spanish: Mochuelo boreal
Swedish: pärluggla

Links to more information from ConservationEvidence.com

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