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Clever Bird Hunts Fish by Turning Itself Into an Umbrella Black egrets, a species of African herons, have a very unique hunting technique – they use their wings to from an umbrella, which not only reduces glare, but also lures fish into false sense of security. Called “canopy feeding”, the hunting technique used by black herons has to be one of the sneakiest observed in the wild. The black wading bird walks about slowly through shallow water and then spreads its wings around its body, to create an umbrella of sorts that blocks out the light. Although it’s not perfectly clear why the African heron uses this specific technique, scientists hypothesize that it has several advantages, like reducing glare and attracting the fish into a trap.

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