Team Logo. The Northern Eagles were a team in the National Rugby League. They were founded by a merger of the North Sydney Bears and the Manly-Warringah Sea Eagles. The teams separated again in 2003. Retrieved from "https://prosportsteams.fandom.com/wiki/Northern_Eagles?oldid=14263" Categories: Former NRL Teams Teams in New South Wales Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.