flock of greater flamingos and ducks in a lagoon

greater flamingos northern pintails fulvous whistling ducks whitefaced waterfowl water birds lagoon wildlife anas acuta animal animals aquatic biodiversity bird color colour dendrocygna bicolor viduata duck fauna flight flock fly flying marsh meander national park natural nature oiseaux djoudj ornithology phoenicopterus roseus saintlouis senegal river species swamp vertebrate vertebrates wetland wild zoology pond tree white-faced ducks park saint-louis