Least Bittern (Ixobrychus exilis) Science Article 5
Call-response surveys were conducted to better delineate and estimate the population of least bitterns (Ixobrychus exilis) in southern Manitoba, Canada. Other marsh bird species whose populations are believed to be declining due to wetland loss throughout, or in parts of, their range were also surveyed; these included the Virginia rail (Rallus limicola), yellow rail (Coturnicops noveboracensis), sora (Porzana carolina), pied-billed grebe (Podilymbus podiceps), and American bittern (Botaurus lentiginosus).
STACEY HAY AND MICHELINE MANSEAU, Proc. Species at Risk 2004 Pathways to Recovery Conference