No it does not. it's a resident bird. They survive quite well during the winter and have no need to migrate, much to the dismay of city dwellers where these birds live.
Pigeons, unlike some other species of birds, do not migrate. They can and will fly many miles away from their roost to find food, but at the end of the day they will always return home. When pigeons are a few months old, they imprint their location in their brain as "home" and will always return there.
No the "Northern" pygmy owl does not undertake a regular seasonal migration, but they are more common in some locations/areas in winter as they often move to lower ground following prey availability.
The Elf owl is smaller than a (northern) pygmy owl.
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.
Cuban Pygmy Owl was created in 1839.
Pernambuco Pygmy Owl was created in 2002.
The cactus ferruginous pygmy owl does not have a niche!