| Another has a blue crane, belonging to the order Grus cinerea, standing erect on its stilts, showing fight. |
| The Whooping Crane Grus americana, or whooper, is the most famous endangered bird in North America. |
| Until recently, it seemed virtually impossible to publish the original version of this work, as the orchestra parts by Editions Grus have been lost. |
| At least two globally threatened species have been affected: Black-necked Crane Grus nigricollis in China and Red-breasted Goose Branta ruficollis in Greece. |
| For Grus leucogeranus, there was little reported change in population levels. |
| After a trial with Canada geese Branta canadensis, microlight aircraft were used in the US to teach safe migration routes to reintroduced whooping cranes Grus americana. |
