| 1. |
Vision plays an important role in helping flamingos synchronize collective displays of several hundred to several thousand birds.
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| 2. |
Some biologists believe that a flamingo's night vision is poor, but better than a human's. |
| 3. |
Like most birds, flamingos have well-developed color perception. |
| 4. |
In zoological settings, flamingos recognize their uniformed keepers among visitors. |