They are gregarious birds , travelling in flocks , hunting cooperatively , and breeding colonially .
Pelicans frequent inland and coastal waters , where they feed principally on fish , catching them at or near the water surface .
Pelicans are gregarious Pelicans , travelling in flocks , hunting cooperatively , and breeding colonially .
Pelicans frequent inland and coastal waters , where they feed principally on fish , catching them at or near the water surface .