| observations on helminth infections of free-living and captive rheas (rhea americana) in brazil. | the present work describes helminth infection of eight free-living and 12 captive rheas (rhea americana) from, respectively, pantanal of mato grosso do sul state, and jaboticabal, sao paulo state, brazil. captive birds were young and had a high mortality rate, while free-living birds were adult and apparently healthy. infections were evaluated by post-mortem examination of internal organs and recovery of helminths using standard parasitological procedures. seven species of nematodes (sicarius un ... | 2005 | 15817218 |