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
Family
IUCN Red List Family
Anage Data Family
Animal Diversity Web Descriptions Family
AskNature Family
Avibase - IOC World Bird Names (2011)
view in classification
Family
BOLDS resource for higher-level taxa
BOLDS resource for higher-level taxa
BOLDS images II Family
BOLDS resource for species-level taxa Family
BioImages resource Family
Biopix Family
Bird Life History Family
Birds resource Family
Clements Checklist resource
view in classification
Family
Conabio Family
EOL Group on Flickr Family
EOL Group on Flickr Family
EOL Group on Flickr Family
EOL Metrics Family
  • Alcidae
Environments Family
Environments Family
Taxonomic Hierarchy of COL-China 2012 Fauna Aves Family
Global Biotic Interactions Family
Global Biotic Interactions Family
Gulf of Maine Area CoML resource Family
AnAge database Family
IUCN Red List
view in classification
Family
BioLib.cz Import Family
BioLib.cz Import
Integrated Taxonomic Information System (ITIS)
view in classification
Family
Inventaire National du Patrimoine Naturel Family
Taxonomic Hierarchy of COL-China 2012 Lei Aves Family
MCZ resource Family
NCBI Taxonomy
view in classification
Family
Natural History Museum Species of the day Family
NatureServe resource Family
NCBI, GGBN, GBIF, BHL, BOLDS data coverage Family
  • Alcidae
OBIS Environmental Information
  • Alcidae
OBIS depth range resource Family
Paleobiology Database
view in classification
Family
SPIRE resource
  • Alcidae
Monthly ARKive text import Family
IUCN Structured Data Family
Taxonomic Hierarchy of COL-China 2012
view in classification
Family
Tree of Life web project
  • Alcidae
World Register of Marine Species (WoRMS)
view in classification
Family
Wikimedia Commons Family
Wikipedia
Wikipedia Family
Wikipedia Family
iNaturalist Images Family
xeno-canto Bird Sounds Family

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!