The Bird That Builds Nests Right By Its Worst Enemy
To watch a bald eagle raid a nesting colony of great blue herons is a gut-churning experience. “The herons have a progression of alarms,” explains Ross Vennesland, a researcher with Environment and Climate Change Canada. “They start with a chortle, and quickly move to really hideous screaming as the eagle swoops in and lands on the nest.” The adult herons are usually forced to flee, while the eagle cracks open an egg or flies away with a chick.