The National Geographic Guide to Birding in North America. Episode 9, Understanding Variations in Plumage.
Plumage variation in a single bird reveals much useful information. First, take account of plumage differences based on sex, and seasonal plumage changes. Then investigate the remarkable range of age-related plumage variation in birds. Learn how birds molt (shed and replace plumage), and how hybrid...
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| Format: | Streaming video |
| Language: | English |
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[Place of publication not identified] :
The Great Courses,
2017.
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| Online Access: | A Kanopy streaming video Cover Image |
| Summary: | Plumage variation in a single bird reveals much useful information. First, take account of plumage differences based on sex, and seasonal plumage changes. Then investigate the remarkable range of age-related plumage variation in birds. Learn how birds molt (shed and replace plumage), and how hybrid species, as well as genetic and environmental factors, pose challenges for identification. |
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| Item Description: | Title from title frames. Film In Process Record. |
| Physical Description: | 1 streaming video file (29 min.) |
| Playing Time: | 00:29:00 |
| Format: | Mode of access: World Wide Web. |