1 |
Fishing |
Eye-submerging |
Submerging eyes into water |
2 |
|
Head-dipping |
Submerging head under surface water |
3 |
|
Diving |
Diving under surface water |
4 |
|
Food handling |
Handling fish on the water surface |
5 |
Preparing |
Vigilance |
Looking around to detect and avoid threats
of predation and intraspecific competition |
6 |
|
Swimming |
Swimming on the surface of the water |
7 |
|
Preening |
Any maintenance done to feathers, including
straightening and oiling feathers |
8 |
Others |
Social interacting |
Intraspecific interaction and
interspecific interaction |