Northern migratory species winter in the savanna, such as spotted sandpiper Actitis macularia, barn swallow Hirundo rustica and blackpoll warbler Dendroica striata.    From Wordnik.com.  [Canaima National Park, Venezuela] Reference

One example of their lifestyles is the blackpoll warbler.    From Wordnik.com. Reference

The blackpoll warbler, weighing .5 ounce, migrates up to 6,000 miles and it has been estimated that it flaps its wings roughly four million times during the journey.    From Wordnik.com.  [The Albert Lea Tribune] Reference