Nairobi, Kenya ? Experts are developing a bird flu warning system that maps migratory routes to help alert countries at risk of receiving infected species, U.N. officials said Sunday.

China, meanwhile, reported two more bird flu outbreaks despite a nationwide effort to vaccinate its 14 billion farm birds.

A pilot project of the warning system is expected to be operational in six months, while the final plan should be running in two years, said Marco Barbieri, of the U.N. Convention on the Conservation of Migratory Species of Wild Animals.

Some details of the warning system were announced at an international wildlife conference in Kenya’s capital, Nairobi.

The system will help experts recommend that farmers move poultry away from key wetlands and offer hygiene advice, said Britain’s Biodiversity Minister Jim Knight.