Elenco (na ordem dos créditos)
Quincy Dunn-Baker
Narrator
Jo Mendenhall
Self - Homosassa Springs State Park Specialist
Steve Markley
Self
Lori Schmidt
Self - Wolf curator
Juliana Smith
Self - Naturalist
Nick Boehm
Self - Nature Program Manager
Joel Dunn
Self - Chesapeake Conservancy President
Chris Nagy
Self - Biologist
Mike Miller
Self - Alaska Wildlife & Conservation Cntr. Exec. Director
Chris Turner
Kristin Jaworski
Self - Ft. Worth Herd Trail Boss
Mike McCormick
Self - A-4 Martin Ranch Owner
Steve Baldwin
Self - Brooklyn Parrots Founder
Lisa Ferguson
Self - Wetlands Institute Dir. Research & Conservation
Bob Lantis
Self - Volunteer Wrangler
Robyn Grahn
Self - Coord. public Programs
Lori Beraha
Self - Volunteer
Sandra Douglas
Self - Crane Trust Dir. Comm. Dev.
Rosemary Prawdzik
Self - Arizona-Sonora Desert Museum Dir. Marketing & Sales
Nancy Labbe
Self - Senior Program Officer
Sam Droege
Bruce Switzer
Self - Switzer Ranch
Jeff Richman
Self - Historian
Meaghann Jordan
Self - Resident
Brice Krohn
Self - Crane Trust Senior Director
Harry Phillips
Jennifer Churchill
Kelly Sorenson
Self - Ventana Wildlife Society Exec. Director
Stephen M. Kajiura
Brett Loehmann
Self - Camper
Elizabeth King
Jeff Boehm
Dave Lychenheim
Self - Wildlife Photographer
Javier Monzon
Self - Asst. Professor of Biology
Gary Brundige
Self - Custer State Park Resource Program Mgr
Gary Hazelton
Self - Publisher
Bob Eriksen
Self - Wildlife Biologist
Bruce Inglangasak
Self - Tour Guide
Dale Anderson
Jim Jordan
Rob Bierregaard
Self - Ornithologist
Peter McCollum
Self - Dog sled operator
Jamie T. Woodlee
Self - Tampa Electric Sr. Environmental Tech.
Amanda Timmerman
Self - Raptor Free Flight Collections Specialist
Bob Bonde
Tom McCarthy
Self - Oatman Stables Owner
Mallory Claassen
Self - CA State Parks Interpretive Specialist
Shannon Barber-Mayer
Self - Wildlife biologist
Deb Sturgess
Self - Adam's Pack Station Owner-Operator
Mary Jo Ballator
Self - Birding Enthusiast
Paul Spitzer
Matthew Clemens
Self - Paddlesport rental & touring company owner
Andrew Caven
Self - Crane Trust Lead Biologist
Michael Fox
David Yanoski
Self - Ranger
Dale DeNardo
Self - Associate Professor
Nicholas Roger
Doug Lequire
Self - Park Superintendent
Jim Haskins
Self - Colorado Parks and Wildlife Manager
Kip Louttit
Cheryl Love
Denise Bowden
Self - PR officer
Carl Barden
Self - Reptile Discovery Center Director
Cindy Heffly
Self - Alligator River Nat'l Wildlife Refuge Visitor Specialist
Joe Burnett
Bob Gottschalk
Self - Citizen biologist
Jan Ojerholm
CA State Parks Docent
Sarah Sortum
Self - Calamus Outfitters
Fran Hutchins
Self - Bracken Cave Preserve Director
Kris Hazelton
Jim Philips
Megan Sneary
Self - Hummingbird Enthusiast
Colleen Young
Brandt Kehoe
Self - Friends of the Elephant Seal President
Lenore Tedesco
Self - Wetlands Institute Exec. Director
Deborah Jansen
Jyllian Smith
Sheila Chandor
Self - Harbormaster
Jennifer Nero Moffatt
Self - Birch Aquarium
Cathie Harms
Chuck Cooper
Self - Crane Trust President & CEO
Paul Hendrix
Self - LBJ State Park Ranger
Justin Core
Self - Land Preservation Coord.
Kjetil Spone
Self - Nagley's General Store Manager
Tom Seaton
Stephanie Enders
Self - Nagley's General Store Owner
Seth Wollney
Self - Ecology Doctoral Candidate
Thomas Diesing
Self - elk enthusiast
Kristin Tieche
Self - The Milkweed Maids Co-Founder
John Holdren
Self - White House Office of Science & Technology Policy Director
Billy Brooks
Self - US Fish and Wildlife Service
Dave Anderson
Self - Tour boat operator
Kim Wheeler
Self - Red Wolf Coalition Exec. Director
Chad Kremer
Self - Custer State Park Buffalo Herd Manager
Joe Duff
Self - Operation Migration CEO
Randy Babb
Isabel Perez-Loehmann
Ben Kraft
Mark Weckel
Aaron Treadway
Self - Meteorologist
Russ Johnson
Self - Phoenix Herpetological Society
Jim Curland
Self - Program Director
David Hillis
Self - Prof. Dept. of Integrative Bio
Dennis Stewart
Mark Parry
Angela Guglielmino
Kelly Taylor
Self - Science Communicator
Michelle Obama
Self - First Lady (uncredited)