| 11. | In 1884 he published in the Ornithological monthly article hunting results.
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| 12. | They conducted studies in magnetism, and returned with ornithological specimens.
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| 13. | Kleefstra is also chief editor of the Dutch ornithological magazine Limosa.
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| 14. | Four years ago, the Ornithological Society did a study.
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| 15. | Blades made with stronger composites would stand up better to ornithological intrusions.
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| 16. | Israeli Ornithological Center : / / www . birds . org . il
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| 17. | Reported range from ornithological observations confirms the heavy migration pattern.
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| 18. | Its current name is a compromise proposed by the International Ornithological Committee.
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| 19. | He became an ornithological clerk at the United States Department of Agriculture.
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| 20. | Following the Keene Act, he contributed scholarly articles to ornithological journals.
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