| 1 | As the season changes, migratory birds begin to arrive at the coastal wetland. | |
| 2 | In October, Columbus also hosts thousands of migratory birds at the Grange Insurance Audubon Center. | |
| 3 | Almost simultaneously, Mongolia reported the detection of H5N1 in dead migratory birds. | |
| 4 | Nigeria is one of several African countries located on the Black Sea-Mediterranean flyway used by migratory birds. | |
| 5 | Their study, published this week by Proceedings of the National Academy of Sciences, also includes new evidence that migratory birds are spreading the virus over large distances. |