Tried to post a comment to expand on their family tree discussion but couldn't. Have sent them a message and hopefully they will repair the function and I can post my note, but until then, here's what I was going to add ....
There is another genealogical twist to this story. Before Roosevelt turned up in Grand Forks this spring, another young male named Hurricane came by for a visit on his way back north. Hurricane fledged from the Radisson Hotel in downtown Winnipeg, Manitoba and is a cousin of Terminator's on their father's side. All four peregrines - Bear, Roosevelt, Terminator and Hurricane - can also track their family trees back to the famous female (and very fertile), MF-1, who nested in Minneapolis from 1987 to 1994.
Best of luck to Terminator & Roosevelt from their fans, and family, in Manitoba.