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This adolescent chick, L4-10, was hatched and raised at the USGS Patuxent Wildlife Research Center and is one of ten whooping cranes being released in Louisiana in February 2011. Photo: USGS

Like superheroes, whooping crane caregivers don disguises, never revealing their true identity to those they’re protecting.

A costumed USGS whooping crane caretaker with chick. Photo: USGS

While raising the young birds in captivity, they wear white costumes and never use their human voices while using a crane puppet to feed them or taking them for walks and swims. The intense foster parenting has helped to save whoopers—the most endangered cranes in the world—from extinction. This week the government released 10 of the enormous creatures in Louisiana, marking the first presence of the birds in the wild in that state since 1950.

All 400 or so of the whoopers alive in North America today come from a flock of about 16 birds. By the 1960s the cranes were essentially extinct in the wild, but through the efforts of federal, state, and conservation groups, now there are about 250 in the wild (the rest live in captivity).

The entire gang of adolescent whooping crane chicks together at the USGS Patuxent Wildlife Research Center. Photo: USGS

The 10 gangly adolescents released in Louisiana were raised at the in Laurel, Maryland. Their is a coastal marsh in the Louisiana Department of Wildlife and Fisheries White Lake Wetlands Conservation Area. This is a resident group, unlike those whoopers that have been taught to migrate between Wisconsin and Florida over the last decade by following ultralight airplanes.

for "Breakout," our in-depth article on how biologists raise whoopers and successfully lure them back on migration routes. 

For an Ô¼ÅÚÊÓƵ exclusive podcast on whooper recover, .