Wednesday, March 18, 2009

SWAN


SPECIES


Swans vary in colour according totheir species.The Nothern Hemisphere swan have pure white feathers.The Southern Hemisphere species are mixed black and white.The Australian Black Swan is completely black except for the white flight feathers on it's wing while South American Black-necked swans has a black neck as it's name suggest.

Swans spined much of their time swimming in ponds,lakes,coastal bays and rivers,and they are noted for their gracefull movement.Although they fly well,they need a large stretch of water for takeoff.


DIET


Swans feed both in water and on land,and their diet consists mainly off plants.Their long necks enable them to feed underwater without diving.They reach underwater and pull up steams,leaves, and roots with their large bills.The young sometimes eat insect and small water invertebrates.

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