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Alder Flycatcher
Empidonax alnorum Brewster, 1895
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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. 59th suppl.)
* Empidonax alnorum  
 
Empidonax traillii alnorum
 
Empidonax trailli alnorum
 
 
 
 
 
Empidonax alnorum
Alder Flycatcher
Empidonax alnorum
Alder Flycatcher
Empidonax alnorum
Alder Flycatcher
Empidonax [traillii or alnorum] Empidonax pusillus
Little Flycatcher
Empidonax traillii
Traill's Flycatcher
Empidonax trailli
Traill's Flycatcher
Empidonax trailli
Alder Flycatcher
Empidonax traillii
Traill's Flycatcher
 
 
 
 
 
 
* Empidonax traillii  
 
 
 
Empidonax trailli trailli
 
 
 
 
 
Empidonax traillii
Willow Flycatcher
Empidonax traillii
Willow Flycatcher
Empidonax traillii
Willow Flycatcher
Empidonax traillii traillii  
 
Empidonax traillii traillii
 
 
 
Empidonax trailli trailli
 
Empidonax traillii traillii
 
 
 
 
 
 
 
Empidonax traillii traillii (traillii) Empidonax pusillus traillii
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Empidonax traillii traillii (campestris)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Empidonax traillii traillii (pusillus)] Empidonax pusillus pusillus
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Empidonax traillii extimus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Empidonax traillii [brewsteri or adastus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Empidonax traillii brewsteri  
 
 
 
 
 
Empidonax trailli brewsteri
 
Empidonax traillii brewsteri
 
 
 
 
 
 
 
Empidonax traillii adastus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

         

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