Warren Bird (www.warrenbird.com) credits Lyle Schallerâs speaking and books as a major influence in his development. Warren is one of the nation's leading researchers of church leaders, focusing on high-impact congregations recognized for their health, evangelism and leadership development. He is the director of research for Leadership Network, a non-profit that provides peer groups and resources for innovative church leaders. An award-winning writer, Warren has collaboratively authored 24 books and more than 200 magazine articles or online reports, all on subjects related to church health. An ordained minister, he has been a church planter and staff pastor. He graduated from Wheaton College and Graduate School (B.A., M.A.), Alliance Theological Seminary (M.Div.), and Fordham University (Ph.D.) in sociology of religion, and has served as an adjunct professor at Alliance Theological Seminary since 1995. He and his wife Michelle live in metro New York City. They have two grown children.