Northwest Airlines, for example, currently requires a note from a physician if a woman seeks to fly within one month of the due date. At the time Heilman flew, 34 weeks was the cutoff. Her daughter Katie, now 4, was delivered 400 miles from home by Caesarean section.
1 This may happen because the birds use their beak to probe for food in muddy wetland soil.  Most sandhill cranes live in freshwater wetlands, feeding on plants, grains, mice, snakes, insects, and worms. Sandhill cranes usually nest in wetlands and create a structure from whatever plants may be at hand. Females typically lay two eggs, which both parents incubate.
Sandhill cranes are one of conservationâs biggest success stories, and they also are one of the most romantic! Sandhill cranes seek out a mate before their annual migration to their breeding grounds and form a pair bond by unison calling. When they arrive at the breeding grounds, sandhill cranes perform elaborate dances as part of their mating ritual.