Cloud-forest Pygmy Owl was created in 1999.
Cuban Pygmy Owl was created in 1839.
Pernambuco Pygmy Owl was created in 2002.
Pacific Pygmy Owl was created in 1991.
Colima Pygmy Owl was created in 1901.
Amazonian Pygmy Owl was created in 1990.
Yungas Pygmy Owl was created in 1991.
Ferruginous Pygmy Owl was created in 1788.
Subtropical Pygmy Owl was created in 1995.
Cape Pygmy Owl was created in 1888.
Guatemalan Pygmy Owl was created in 1875.
East Brazilian Pygmy Owl was created in 1821.
The Elf owl is smaller than a (northern) pygmy owl.