Whooping Crane

Whooping cranes are native to North America and are the tallest birds on the continent.
The primary threat to the animals is habitat loss, but they also strike power lines and are sometimes illegally shot. In the 1940s, the last wild flock was down to fewer than 20 birds, according to the American Bird Conservancy.
One self-sustaining populations still summers in Texas, but other reintroduced populations are now established on the East Coast and in the Rockies.