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Ferruginous, Tucuman or Ridgway's Pygmy-Owl

Glaucidium [brasilianum, ridgwayi or tucumanum] (= Glaucidium brasilianum) (Gmelin, JF, 1788)

You can select up to 8 checklists to perform a comparison of taxonomic authorities for this taxon and related concepts:

You can also use one of the pre-defined group of taxonomic authorities below:

The table provided below compares authorities for this taxon and related concept. Names in red are those that differ from the name in the column located immediately to the left.
Species concept American Ornithologists' Union 1st edition (1886)American Ornithologists' Union 2nd edition (1895)American Ornithologists' Union 3rd edition (1910)American Ornithologists' Union 4th edition (1931)American Ornithologists' Union 5th edition (1957)American Ornithologists' Union 6th edition (1983)American Ornithologists' Union 7th edition (1998)American Ornithologists' Union 7th edition (incl. 60th suppl.)
Glaucidium [brasilianum, ridgwayi, tucumanum or nana]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium [brasilianum, ridgwayi or tucumanum] Glaucidium phalaenoides
Ferruginous Pygmy Owl
Glaucidium phalaenoides
Ferruginous Pygmy Owl
Glaucidium phaloenoides
Ferruginous Pygmy Owl
Glaucidium brasilianum
Ferruginous Pygmy Owl
Glaucidium brasilianum
Ferruginous Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
Glaucidium brasilianum
Ferruginous Pygmy-Owl
Glaucidium [brasilianum or ridgwayi]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Glaucidium brasilianum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum [brasilianum]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum brasilianum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum medianum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum margaritae  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum phaloenoides  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum duidae  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum olivaceum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum stranecki  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum ucayalae  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Glaucidium ridgwayi  
 
 
 
 
 
Glaucidium brasilianum ridgwayi
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi [ridgwayi, intermedium, saturatum]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi [ridgwayi or saturatum]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi [ridgwayi or intermedium]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi ridgwayi  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi intermedium  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi saturatum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium ridgwayi cactorum  
 
 
 
 
 
 
 
Glaucidium brasilianum cactorum
 
 
 
 
 
 
 
* Glaucidium tucumanum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium tucumanum tucumanum  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium tucumanum pallens  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium [brasilianum or rigwayi, incl. pallens]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Glaucidium brasilianum [incl. pallens]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Glaucidium nana  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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