Some warblers make their long winter migration even longer
![blackpoll warbler](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/ticker-warbler-free.jpg?fit=860%2C460&ssl=1)
Some blackpoll warblers living in western North America cover twice the distance flown by their eastern U.S. counterparts by first flying east for a snack before migrating to South America.
S. Morris