| Autor: |
Young, H. Glyn |
| Předmět: |
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| Zdroj: |
Ostrich: The Journal of African Ornithology; Sep99, Vol. 70 Issue 2, p117, 6p, 3 Diagrams, 4 Charts, 3 Graphs |
| Abstrakt: |
Compares the courtship behavior between the Meller's duck, yellowbilled duck and Northern Mallard. Structure, duration and frequency of the main display components, grunt-whistle, head-up-tail-up and down-up; lack of down-up display of the Meller's duck; Behavioral similarities found between Meller's duck and the African black duck. |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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