Avibase - The World Bird Database

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There are more than 20,000 regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than 175 languages. Each checklist can be viewed with photos shared by the birding community, and also printed as PDF checklists for field use.
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Scientific name	Common name	Status
Formicivora	Formicivora sp.	genus
Formicivora (Neorhopias)	Neorhopias sp. (Formicivora)	genus (synonym)
Formicivora iheringi	Narrow-billed Antwren	full species
Formicivora [grisea or intermedia]	Southern White-fringed or Northern White-fringed Antwren	species group (or species)
Formicivora grisea	Southern White-fringed Antwren	full species (or nominal subsp)
Formicivora grisea grisea	Southern White-fringed Antwren (grisea)	nominal subspecies
Formicivora grisea grisea (grisea)	Southern White-fringed Antwren (grisea, sensu stricto)	nominal suspecies (sensu stricto)
Formicivora grisea grisea (deluzae)	Southern White-fringed Antwren (grisea, syn. deluzae)	junior synonym (or subspecies)
Formicivora grisea rufiventris	Southern White-fringed Antwren (rufiventris)	subspecies
Formicivora intermedia	Northern White-fringed Antwren	full species (or subspecies)
Formicivora intermedia intermedia	Northern White-fringed Antwren (intermedia)	nominal subspecies
Formicivora intermedia alticincta	Northern White-fringed Antwren (alticincta)	subspecies
Formicivora intermedia hondae	Northern White-fringed Antwren (hondae)	subspecies
Formicivora intermedia fumosa	Northern White-fringed Antwren (fumosa)	subspecies
Formicivora intermedia tobagensis	Northern White-fringed Antwren (tobagensis)	subspecies
Formicivora intermedia orenocensis	Northern White-fringed Antwren (orenocensis)	subspecies
Formicivora melanogaster	Black-bellied Antwren	full species
Formicivora melanogaster melanogaster	Black-bellied Antwren (melanogaster)	nominal subspecies
Formicivora melanogaster bahiae	Black-bellied Antwren (bahiae)	subspecies
Formicivora serrana	Serra Antwren	full species
Formicivora serrana [serrana or interposita]	Serra Antwren [serrana or interposita]	subspecies group (or species)
Formicivora serrana serrana	Serra Antwren (serrana)	nominal subspecies
Formicivora serrana interposita	Serra Antwren (interposita)	subspecies
Formicivora serrana littoralis	Serra Antwren (littoralis)	subspecies (candidate for split)
Formicivora erythronotos	Black-hooded Antwren	full species