In Darryl McGrath’s new book “Flight Paths; A Field Journal of Hope, Heartbreak, and Miracles with New York’s Bird People,” published under the State University of New York Press’ Excelsior Editions imprint, the story of how teams of biologists worked to stabilize and eventually restore the populations of these birds is interwoven with the challenges to, and efforts being taken on behalf of, four other threatened bird species to yield what is described as “engaging” and “compelling” by early reviewers.