Troglodytes musculus
The southern house wren (Troglodytes musculus) is a very small passerine bird in the wren family Troglodytidae. It is found from southern Mexico to southern Chile and southern Argentina. The name troglodytes means "hole dweller", and is a reference to the bird's tendency to disappear into crevices when hunting insects or to seek shelter. It was formerly considered to be conspecific with the northern house wren (Troglodytes aedon).
Source: Wikipedia
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