Jacana, usl name of eight species of birds tropical wade. The jacanas can hop on the floating sheets of the water lie and other watery plants thanks to their exceptioly long fingers. In six species, one finds a frontal plate prolonged by the nozzle, and all the species have either an osseous protrance, or a needle with the fold of the wing. The jacanas are polyandrous, ie. a femamele couples itself with several males. Jacana, usl name of eight species of birds tropical wade. The jacanas can hop on the floating sheets of the water lie and other watery plants thanks to their exceptioly long fingers. In six species, one finds a frontal plate prolonged by the nozzle, and all the species have either an osseous protrance, or a needle with the fold of the wing. The jacanas are polyandrous, ie. a femamele couples itself with several males.