| a morphometric analysis of the lungs of high-altitude ducks and geese. | we examined the morphology of the lungs of five species of high-altitude resident ducks from lake titicaca in the peruvian andes (yellow-billed pintail [anas georgica], cinnamon teal [anas cyanoptera orinomus], puna teal [anas puna], speckled teal [anas flavirostris oxyptera], and ruddy duck [oxyura jamaicensis ferruginea]) and compared them with those of the high-altitude migratory bar-headed goose (anser indicus) and the low-altitude migratory barnacle goose (branta leucopsis). we then determi ... | 2020 | 32173858 |