In the Putman family there’s no such thing as leaving the nest. Instead, the Michigan-based clan of 26, which includes Bill and Barb Putman, their four children Billy, 34, Brandon, 31, Blake, 29, and Blair, 27, along with their spouses— plus, their combined 16 grandchildren—are very happily living in the same seven-bedroom, two-bathroom house. Sharing everything from chores and baby sitting duties to working in the family construction business, the mega-size family, who star on TLC’s Meet the Putmans (Mondays at 10 p.m.) love their unique living arrangement. “Every morning is like Christmas, and every night is like Thanks giving,” says patriarch Bill, 57, who notes that their devout Christian beliefs didn’t serve as the impetus for their multi generational lifestyle. “It just happened,” Barb, 57, says, adding that they…