A distinctive bird of open grasslands, the Bobolink is the only American bird that is black underneath and white on the back. This coloring makes the male stand out while he is performing his displays. After breeding he changes into a drab, camouflaged plumage to spend the rest of the year. (from Cornell Lab of Ornithology)

ID by Dad. :-)

(When you open a gallery, you can click on the thumbnails to get different sizes of photos. Then use next or previous to navigate through the photos, or use back to see thumbnails and pick individual pictures to enlarge.)