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.

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Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
view in classification
Order
PNG_Birds Order
2010 Field Museum Class in Phylogenetics Order
2011 Latin School Project Week Order
Monthly ARKive text import Order
AnAge database Order
Anage Data Order
Animal Diversity Web Descriptions Order
AskNature Order
Avibase - IOC World Bird Names (2011)
view in classification
Order
BHL: BioDivLibrary's photostream
  • Passeriformes
BOLDS resource for higher-level taxa
BOLDS resource for higher-level taxa
BOLDS images II Order
BOLDS resource for species-level taxa Order
Barry Armstead Photography Order
BioImages resource
BioImages resource Order
BioImages resource Order
BioKIDS Order
BioKIDS Critter Catalog
BioKIDS Critter Catalog Order
Bird Life History Order
Birds resource Order
Clements Checklist resource
view in classification
Order
Colaboraciones Americanas Sobre Aves
  • Passeriformes
Conabio Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL Group on Flickr Order
Environments
IRMNG
view in classification
Order
Taxonomic Hierarchy of COL-China 2012 Fauna Aves Order
Female Passerine Song Trait Data Order
Field Museum Class in Phylogenetics: 2010 Order
Fire Effects Information System (FEIS) - Animals Order
Global Biotic Interactions Order
Global Biotic Interactions Order
Global Biotic Interactions Order
Global Biotic Interactions Order
IABIN resource Order
INBio resource Order
IUCN Red List Order
IUCN Red List
view in classification
Order
BioLib.cz Import
BioLib.cz Import Order
Insect Visitors of Illinois Wildflowers Order
Integrated Taxonomic Information System (ITIS)
view in classification
Order
Inventaire National du Patrimoine Naturel Order
Taxonomic Hierarchy of COL-China 2012 Lei Aves Order
Library of Alexandria Order
Library of Alexandria Order
Library of Alexandria
MCZ resource Order
Morphbank Resource
Morphbank Resource Order
NCBI Taxonomy
view in classification
Order
Natural History Museum Species of the day Order
NatureServe resource Order
OBIS depth range resource Order
Ocean Genome Resource- genomic DNA available Order
India Biodiversity Portal Species Data Order
Paleobiology Database
view in classification
Order
SPIRE resource
Sailinsteve
  • Passeriformes
South African Vertebrates
view in classification
Order
CIEE Tropical Ecology and Conservation Program Spring 2013 Order
IUCN Structured Data Order
Taxonomic Hierarchy of COL-China 2012
view in classification
Order
The Biodiversity of Tamborine Mountain Order
The Field Museum Member's Night EOL Photo Scavenger Hunt 2010 Order
Tree of Life web project
  • Oscines
World Register of Marine Species (WoRMS)
view in classification
Order
Wikimedia Commons Order
Wikimedia Commons
Wikimedia Commons
Wikipedia Order
Wikipedia Order
Wikipedia Order
Wikipedia Order
Wright et al, 2014 Order
Wright et al, 2014 Order
iNaturalist Images Order
iSpot southern Africa Order
  • Passeriformes

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