Getting Weighed

Crane 10 is 12 days old here. Every morning Geoff coaxes each bird out of its pen and onto a scale with a meal worm or two, which means he has to weigh each bird twice — before it eats the meal worm, then right after. Geoff feeds the information into a giant mainframe computer which calculates the all-l important percentage of weight gain or loss in the last 24 hours. If a chick is gaining weight too fast, it gets more walks or swims (or both) to burn off the calories. If it is not gaining weight, it gets more feeding sessions and less exercise.

Image: Operation Migration