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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
Acanthorhynchus	Acanthorhynchus sp.	genus
Acanthorhynchus tenuirostris	Eastern Spinebill	full species
Acanthorhynchus tenuirostris tenuirostris	Eastern Spinebill (tenuirostris)	nominal subspecies
Acanthorhynchus tenuirostris tenuirostris (tenuirostris)	Eastern Spinebill (tenuirostris, sensu stricto)	nominal suspecies (sensu stricto)
Acanthorhynchus tenuirostris tenuirostris (trochiloides)	Eastern Spinebill (tenuirostris, syn. trochiloides)	junior synonym (or subspecies)
Acanthorhynchus tenuirostris tenuirostris (loftyi)	Eastern Spinebill (tenuirostris, syn. loftyi)	junior synonym (or subspecies)
Acanthorhynchus tenuirostris cairnsensis	Eastern Spinebill (cairnsensis)	subspecies
Acanthorhynchus tenuirostris halmaturinus	Eastern Spinebill (halmaturinus)	subspecies
Acanthorhynchus tenuirostris dubius	Eastern Spinebill (dubius)	subspecies
Acanthorhynchus tenuirostris dubius (dubius)	Eastern Spinebill (dubius, sensu stricto)	nominal suspecies (sensu stricto)
Acanthorhynchus tenuirostris dubius (regius)	Eastern Spinebill (dubius, syn. regius)	junior synonym (or subspecies)
Acanthorhynchus superciliosus	Western Spinebill	full species
Pycnopygius	Pycnopygius sp.	genus
Pycnopygius ixoides	Plain Honeyeater	full species
Pycnopygius ixoides [ixoides]	Plain Honeyeater [ixoides]	subspecies group (or species)
Pycnopygius ixoides [ixoides or cinereifrons]	Plain Honeyeater [ixoides or cinereifrons]	subspecies group (or species)
Pycnopygius ixoides ixoides	Plain Honeyeater (ixoides)	nominal subspecies
Pycnopygius ixoides cinereifrons	Plain Honeyeater (cinereifrons)	subspecies
Pycnopygius ixoides [proximus or simplex]	Plain Honeyeater [proximus or simplex]	subspecies group (or species)
Pycnopygius ixoides proximus	Plain Honeyeater (proximus)	subspecies
Pycnopygius ixoides simplex	Plain Honeyeater (simplex)	subspecies
Pycnopygius ixoides unicus	Plain Honeyeater (unicus)	subspecies
Pycnopygius ixoides finschi	Plain Honeyeater (finschi)	subspecies
Pycnopygius cinereus	Marbled Honeyeater	full species
Pycnopygius cinereus [cinereus or dorsalis]	Marbled Honeyeater [cinereus or dorsalis]	subspecies group (or species)