Bald eagles are pretty social raptors and normally relatively tolerant of others. That is, except when it is nesting season. When they have young, they are relentless and vicious in protecting their home and family. When visiting my favorite pair last weekend, an intruder dared to get too close and that prompted mom to act. She launched out of the nest and set off in pursuit, ensuring the interloper was well-aware whose territory it was.