The trustees of the Madrid Zoo heard that there were only twenty-seven whooping cranes left in the United States, and they determined that they must have one before the breed became extinct.
A whooping crane was soon dispatched via air freight. However, when the American bird arrived at Madrid's airport, it refused to disembark.
Thus the trustees had to returrn empty-handed to their zoo.
The moral of this story is: that cranes in Spain stick mainly to the plane.
