1 Temporada
24 Episodio
The National Geographic Guide to Birding in North America - Season 1 Episode 9 Episodio 9
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.
- Año: 2017
- País: United States of America
- Género: Documentary
- Estudio: Wonderium
- Palabra clave: natural history, birding, educational, guide, science
- Director: James Currie
- Emitir: James Currie