United States Virginia change
Sri Lanka Breaking News
Sri Lanka parliament
vivalankaSri Lanka newsSri Lanka businessSri Lanka sportsSri Lanka technologySri Lanka travelSri Lanka videosSri Lanka eventssinhala newstamil newsSri Lanka business directory
vivalanka advertising
Menu
Stay Connected
facebooktwittermobile
Popular Searches
T20 World Cup
Sponsored Links
Sri Lanka Explorer

Ducks' bill colour gives STD clue

Apr 13, 2011 4:45:40 AM - bbc.co.uk
Ducks use bill colour to determine their mates' sexual health, according to scientists.