Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

Please wait...

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
view in classification
Species
Global Biotic Interactions Species
Animal Diversity Web Descriptions
AskNature
Avibase - IOC World Bird Names (2011)
view in classification
BHL: BioDivLibrary's photostream
  • Asio otus
BHL: BioDivLibrary's photostream
BOLDS images II Species
BOLDS resource for species-level taxa
BibAlex LifeDesk
  • Asio otus (Linnaeus, 1758)
BioKIDS Critter Catalog
Biopix
Bird Life History Species
Birdlife International links resource
Birds Animal Diversity Web
Birds of DC Brief Summary Database
CalPhotos
  • Asio otus
Chiricahua National Monument - Plants
  • Asio otus
Clements Checklist resource
view in classification
Species
DiscoverLife map resource
  • Asio otus
Dutch Marine and Coastal Species Encyclopedia
  • Asio otus
EOL Group on Flickr
EOL Group on Flickr
  • Asio otus
Environments
Taxonomic Hierarchy of COL-China 2012 Fauna Aves
GBIF Elevation Data Species
Genome 10K Project Vertebrates
  • Asio otus
Anage Data
IUCN Red List
IUCN Red List
view in classification
BioLib.cz Import
Integrated Taxonomic Information System (ITIS)
view in classification
Species
Inventaire National du Patrimoine Naturel Species
One Species at a Time Podcasts
Taxonomic Hierarchy of COL-China 2012 Lei Aves
NCBI Taxonomy
view in classification
Species
NatureServe resource Species
OBIS Environmental Information
  • Asio otus
OBIS depth range resource
SPIRE resource
  • Asio otus
Southeast Arizona Group Chiricahua NM
  • Asio otus
Southeast Arizona Group Fort Bowie NHS
  • Asio otus
AnAge database
IUCN Structured Data
TaxonConcept.org outlinks
  • Asio otus
Taxonomic Hierarchy of COL-China 2012
view in classification
Species
Tree of Life web project
  • Asio otus
Vogels van het Dijleland (ruw)
  • Asio otus
Wikimedia Commons
Wikipedia
iNaturalist Images Species
iSpot links Species
  • Asio otus
Birds of DC maps
xeno-canto Bird Sounds Species

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!