If you ever see a big brown bird plunging into the water bill first, it would be pelican. These animals are mostly seen on coasts in the southern United States to northern Brazil and Chile. At any age most brown pelicans have a white body.
Most adults have a lot of white above and about the neck and head.
Young brown pelicans have a dark head and white colored bottoms. As almost all birds do, these brown colored pelicans migrate to a warmer area in the world. After breeding season the sometimes large flocks fly to the north for the hot months, as in summer and some of spring, along both the Atlantic and Pacific coasts. In the more colder months for fall and winter these brown pelicans fly in flocks to the warmer areas. If you are a lucky viewer, you will catch a glimpse of the sometimes unsual viewing of young brown pelicans inland in the summer.