(Anhimidae; Ϯ Northern Screamer C. chavaria) Gr. χαυνος khaunos spongy, porous; ref. the cellules or air-sacs beneath the skin of screamers; “When any part of the skin is touched by the hand a crackling is felt” (Latham 1785); “GENUS 99. CHAUNA (χαυνος fungosus, inflatus, inanis).  ...  Species: Parra Chavaria Lin. (Chaja Azara.)  Observat. Hanc avem (uti Glareolam, Cereopsin, Dicholophum) me nondum videsse, fateor; characteres genericos itaque, quantum licuit, e descriptionibus et iconibus hausi.   Chaunam, cujus nomen inde deductum est, quod cutis etiam pedum sub tactu crepet, scilicet cellulis inanibus ipsi substratis, a Palamedea et Parra distinguendam esse, mihi persuasum habeo.” (Illiger 1811); "Chauna Illiger, Prodromus, 1811, p. 253. Type, by monotypy, Parra chavaria Linné." (Peters 1931, 1, 142).
Var. Chaussa, Chaima.
Synon. Chaja, Ischyrornis, Opistolophus.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 11 December 2018).