They live in to different places during the year.
They reside in North America to during the breeding season to
raise their young. This is only possible because of man made
housing because over time, natural cavities have diminished, so it
is up to Humans to whether they shall live on or not.
After their young is fledged(able to fly). They will then fly
down to South America to avoid the bitter cold and also find a more
plentiful food source. A very long voyage to endure with very
little stopping. Can you imagine taking a trip such as that every
year?