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