What are Dodo's & how did they become extinct?

DODOS: - Heavily-built, flightless bird (swan size) - Lived on Mauritius (an island in the Indian ocean). Which was uninhabited & the birds had no natural predators - Mauritius was colonised by the Dutch in 1638, dodos were hunted for food (easy to catch and new competitors were brought onto the island like pigs, cats, rats), they ate dodos' eggs & young - Dodos became extinct within 80 years