11. Pelicans are very large water birds with a distinctive pouch under their beak. 12. The virus is widespread in Asia, carried by mosquitoes, pigs and water birds . 13. They feature rare flora and fauna, especially water birds and amphibia. 14. The sanctuary supports wide variety of water birds and mammalian wildlife. 15. This area is an important resting place for migrating water birds . 16. It is estimated that this wetland regularly supports over 40, 000 water birds . 17. Other foraging water birds often assemble around them to form mixed-species foraging groups. 18. They're water birds : great blue herons, small greenback herons, ducks. 19. There are four islands within a conservation area, home to many water birds . 20. Pelicans are large water birds with distinctive pouches under their bills.