Get an up-close look at eagle’s nest on Hannibal’s riverfront January is the absolute prime time to watch majestic eagles make their nests and feed their young and the best eagle-watching areas in the nation are right here in the tri-states, along the Mississippi River. An eagle’s nest was built last weekend at Kiwanis Park, during the Hannibal Parks & Recreation “All About Eagles” program. The nest will be left there for a few weeks. It’s not a starter home. It’s on the ground as more of a show and tell. An actual eagle’s nest is typically 4-5 feet wide and 2-4 feet deep. The longer its perched in a tree the bigger it grows, as the eagles add to the nest every year.