Operation Migration - Photo Journal

And it's founding members are responsible for this reintroduction. Click to learn more.

Mark and Dan prepare to release the cranes while Joe takes off in the North Sails trike.

Richard leads the birds down the field, away from the travel enclosure on a frosty morning.

One youngster drops down low on take-off but does manage to catch up.

Richard van Heuvelen, piloting the Wild Birds Unlimited ultralight turns the flyers on course.