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Unspotted Saw-whet Owl
Aegolius ridgwayi (Alfaro, 1905)
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Order:
  Strigiformes
Family:
  Strigidae
Genus:
  Aegolius

Scientific:
  Aegolius ridgwayi

Citation:
  (Alfaro, 1905)

Reference:
  Proc.Biol.Soc.Wash. 18 p.217

Protonym:
  Cryptoglaux ridgwayi

Avibase ID:
  6439759F21396ADF

Short link:
  https://avibase.ca/6439759F

Taxonomic Serial Number:
TSN: 686697

Geographic range:

  • Aegolius ridgwayi ridgwayi: Costa Rica and w Panama
  • Aegolius ridgwayi tacanensis: Oak-pine woodlands of s Mexico (Chiapas)
  • Aegolius ridgwayi rostratus: Locally from Guatemala to nw El Salvador
Source: Clements checklist

English:
  Unspotted Saw-whet Owl
Czech:
  sýc panamský
German:
  Ridgwaykauz
Danish:
  Hvidbrynet Perleugle
Spanish:
  Mochuelo Moreno
Finnish:
  ruskohelmipöllö
French:
  Nyctale immaculée
Italian:
  Civetta capogrosso del Centroamerica
Japanese:
  mekishikokinmefukurou
Japanese:
  メキシコキンメフクロウ
Dutch:
  Ridgways Zaaguil
Norwegian:
  Kanelugle
Polish:
  wlochatka bialolica
Russian:
  Бесполосый мохноногий сыч
Slovak:
  pôtik pláštikový
Swedish:
  brun pärluggla
Chinese:
  无斑棕榈鬼鸮


Authorities recognizing this taxonomic concept:

American Ornithologists' Union 6th edition (1983):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 35th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 36th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 37th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 38th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 39th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 40th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 6th edition (incl. 41st suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (1998):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 42nd suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 43rd suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 44th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 45th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 46th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 47th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 48th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 49th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 50th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 51st suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 52nd suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 53rd suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 54th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 55th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 56th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 57th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 58th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
American Ornithologists' Union 7th edition (incl. 59th suppl.):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts (current):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 01 (August 2013):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 02 (May 2014):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 03 (March 2015):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 04 (Aug 2016):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 05 (Jan 2017):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Avibase taxonomic concepts v. 06 (Feb 2018):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 00:
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 01:
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 02:
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 03:
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 04:
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 05 (Jun 2012):
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 05.1 (Oct 2012):
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 06 (Nov 2013):
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 06.1 (Feb 2014):
   Southern Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 07 (Jul 2014):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 08 (Oct 2015):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 09 (Dec 2016):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Birdlife checklist version 09.1 (Jun 2017):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
HBW and BirdLife Taxonomic Checklist v2 (Dec 2017):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Commission internationale pour les noms français des oiseaux (1993, révision 2009):
   Nyctale immaculée ( Aegolius ridgwayi) [version 1]
Commission internationale pour les noms français des oiseaux (1993):
   Nyctale immaculée ( Aegolius ridgwayi) [version 1]
Clements 1st edition:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 3rd edition:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 4th edition:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (as published):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2000 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2001 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2002 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2003 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2004 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 5th edition (incl. 2005 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (incl. 2007 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (incl. 2008 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (incl. 2009 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (version 6.5 incl. 2010 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (version 6.6 incl. 2011 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (version 6.7 incl. 2012 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (version 6.8 incl. 2013 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements 6th edition (version 6.9 incl. 2014 revisions):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements, version 2015:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements, version 2016:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements, version 2017:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Clements, version 2018:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 1.50:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 1.52:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 1.53:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 1.54:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 1.55:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 2015:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 2016:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 2017:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
eBird version 2018:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 2nd edition:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 2nd edition (incl. ? suppl):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (as published):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 1.2):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 2.1):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 3.1):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 4):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 5):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 6):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 7):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 3rd edition (incl. corrigenda 8):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 4th edition (vol. 1-2):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Howard and Moore 4th edition (incl. corrigenda vol.1-2):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Handbook of the Birds of the World (vol 1-16):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Handbook of the Birds of the World and Birdlife (Dec 2017):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Handbook of the Birds of the World Alive (31/01/2015):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Handbook of the Birds of the World Alive (03/07/2017):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 1.0:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 1.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 1.5:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 1.6:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 1.7:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.0:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.4:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.5:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.6:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.7:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.8:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.9:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.10:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 2.11:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 3.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 3.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 3.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 3.4:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 3.5:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 4.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 4.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 4.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 4.4:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 5.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 5.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 5.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 5.4:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 6.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 6.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 6.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 6.4:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 7.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 7.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 7.3:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 8.1:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
IOC World Bird Names, version 8.2:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Morony, Bock and Farrand:
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
James Lee Peters:
    Aegolius ridgwayi [version 1]
James Lee Peters (original):
    Aegolius ridgwayi [version 1]
James Lee Peters (2nd edition):
    Aegolius ridgwayi [version 1]
Sibley and Monroe 2nd edition (1996):
   Unspotted Saw-whet Owl ( Aegolius ridgwayi) [version 1]
Zoonomen - Zoological Nomenclature Resource:
    Aegolius ridgwayi [version 1]
Zoonomen - Zoological Nomenclature Resource:
    Aegolius ridgwayi [version 1]

Taxonomic status:

Species status: full species (sometimes a subspecies)

This taxon is considered a subspecies of Aegolius [acadicus or ridgwayi] (sensu lato) by some authors

Your sightings

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Related taxa

Other related concepts
Other synonyms

Catalan: Mussol inmaculat
Czech: Sýc panamský
Danish: Hvidbrynet Perleugle
German: Ridgwaykauz
English: northern saw-whet owl, Southern Saw-whet Owl, Unspotted Saw-whet Owl
Spanish: Lechucita parda, Lechuza Sureña, Mochuelo Moreno, Tecolote afilador, tecolote canelo, Tecolote Oyamelero Sureño, Tecolote-abetero Sureño
Spanish (Costa Rica): Lechucita parda
Spanish (Spain): Mochuelo Moreno
Spanish (Mexico): tecolote canelo, Tecolote Oyamelero Sureño, Tecolote-abetero Sureño
Spanish (Panama): Buhito Pardo
Estonian: lõuna-töbikakk
Finnish: Ruskohelmipöllö
French: Chouette de Ridgway, Nyctale de Ridgway, Nyctale immaculée
Hungarian: Ridway-bagoly
Italian: Civetta capogrosso del Centroamerica, Civetta del Ridgway
Japanese: mekishikokimmefukurou, mekishikokinmefukurou
Japanese: メキシコキッメフクロウ, メキシコキンメフクロウ
Latin: Aegolius acadicus ridgwayi, Aegolius ridgwayi, Aegolius ridgwayi ridgwayi, Cryptoglaux ridgwayi
Lithuanian: Ridžvėjaus lututė
Dutch: Ridgways Zaaguil, Ridgway-zaaguil
Norwegian: Kanelugle
Polish: wlochatka bialolica, włochatka białolica
Russian: Бесполосый мохноногий сыч, Сыч мексиканский мохноногий
Slovak: pôtik pláštikový
Swedish: Brun pärluggla
Turkish: Kumral Paçalı Baykuş
Chinese: 无斑棕榈鬼鸮
Chinese (Traditional): 無斑棕櫚鬼鴞

 

         

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