Great Blue Heron chicks spend roughly two months in their nest before fledging, during which time they are totally dependent on both of their parents for food. During the first week after their eggs have hatched, the parents return to the nest after foraging and stand on the rim while placing regurgitated food into their chicks’ open beaks. By the second week the chicks grasp the adult’s beak briefly when the parent arrives with food, and by the end of the third week the chicks are pulling the adult’s beak into the nest, which they continue to do until they fledge. Occasionally chicks reach into an adult’s open beak to get food, but most of the time the parents put the food into their offsprings’ beaks.
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