Table Of Contents
- Description
- Behavior
- Reproduction and Life History
- Morphology
- Trophic Strategy
- Ecology and Distribution
- Distribution
- Habitat
- Associations
- Conservation
- Relevance
- Uses
- Biodiversity Heritage Library
- References and More Information
- Literature References
- Specialist Projects
- Common Names
Behavior
Gadwalls are gregarious, migratory waterfowl. They will leave their breeding grounds in the north from September in Alaska to the beginning up to late October in the Prairie-Pothole regions and other southern areas. Some weather event will be the trigger that will signal migration timing. The birds will fly in flocks of less than 100 individuals, but as many as 10, 000 will migrate in separate groups to the same destination arriving within hours of each other.
Although they are diurnal in their daily behavior, migrations flights usually take place at night. This is believed to avoid predation and conserve energy by flying in cooler temperatures (LeSchack et al. 1997).
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Heniochus acuminatus (Linnaeus, 1758)
Pennant coralfish |
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Anas clypeata Linnaeus, 1758
Spoonbill duck |
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Atherinomorus lacunosus (Forster, 1801)
Hardyhead silverside |
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Chromis leucura Gilbert, 1905
Whitetail chromis |
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Lates niloticus (Linnaeus, 1758)
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