re: Question for OT Ornithologist. Black birds and White birds on the LSU lakes.

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top half of the tree filled with black birds and the bottom half of the tree filled with white birds.

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The black birds are cormorants and they typically roost/perch at the top of trees. Yes, they can swim. Almost too good. They swim underwater and eat fish. They often work together chasing fish, kinda like herding cattle. They can wipe out a fish population in a pond with the quickness.

The white birds are egrets. They just roost in the trees overnight and typically leave the trees during the day to go do egret things like eat stuff, hang out with cows, and wade in small bodies of water.