Flamingos display pink plumage because their diet includes many small crustaceans the shells of which are laden with pink pigmentation and other chemicals which in turn manifest in the flamingo's feathers. Flamingos feed in wetlands and lake beds, stirring up mud and silt with their feet and then sweeping their beaks through the agitated soil to sieve out their prey.Know More
Flamingos in captivity will often lose their coloration. Dietary supplements can be used to restore their brilliant color, but without it their plumage will fade until it is a kind of off-white or rose and cream color that is also sometimes seen in wild flamingos feeding from atypical sources.
Flamingos are not born pink and do not acquire their vivid pink coloration until at least 2 years of age. Hatchlings are grey or white with a thick layer of downy feathers covering their bodies, and they remain this way until they molt and fledge upon maturation.
Flamingos take in a huge amount of muck and dirt as they filter through the waters where they feed. To avoid swallowing this detritus, their beaks are equipped with a filter-like mechanism which allows them to catch food while water and refuse sluice out.Learn more about Waterfowl
According to About.com, penguins are carnivores with piscivorous diets, and their diet consists mainly of fish, crustaceans and cephalopods. Penguins are opportunistic feeders, and their diet is largely based on what is available seasonally and in a particular location.Full Answer >
A baby mallard duck's diet consists of invertebrates such as worms, gastropods and small crustaceans. The protein and fat found in these sources are vital to the growing duck. The mallard duckling's egg yolk can also be used as a food source the first three days after hatching.Full Answer >
According to the National Wildlife Federation, whooping cranes have an omnivore's diet that includes crustaceans, small fish, insects, amphibians, reptiles, grains, marsh plants and acorns. They live in locations with significant water sources, such as wetlands, marshes, mudflats, wet prairies and fields.Full Answer >
The diet of the oarfish consists of plankton, small crustaceans and small squid that they are able to strain from the water. These fish have a small mouth with no visible teeth, so they strain their food through a specially formed gill rake that can be found on the inside of their mouth.Full Answer >