Egretta caerulea feed mainly during the daylight hours. They are carnivorous, with their diet consisting of fish, frogs, lizards, snakes, turtles, and crustaceans such as fiddler crabs, crayfish and shrimp. They also eat aquatic insects and spiders. When swamps and marshes become dry, they live on grasshhoppers, crickets, beetles and other grassland insects.
The Little Blue Heron's long legs enable it to wade into the water, where it walks slowly along an area in order to locate prey, often retracing its steps or standing motionless. They sometimes rake the ground with their foot to disturb prey into movement and stretch their long necks to peer into the water. Their long beak is used to jab and eat the prey. Extensive studies found the heron's prey capture success rate to be about 60 percent. (Terres 1980, Riegner 1998)
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