The National Geographic Guide to Birding in North America Temporada 1 Episodio 9
The National Geographic Guide to Birding in North America
Ver The National Geographic Guide to Birding in North America Temporada 1 Episodio 9 Online - 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.
- Género: Documentary
- País: United States of America
- Estudio: Wonderium
- Director: James Currie
- Actores: James Currie
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