(Ardeidae; Ϯ Cattle Egret B. ibis) Specific name Ardea bubulcus Audouin, 1823 (= syn. Bubulcus ibis); "the habits of this bird are remarkable, as it rarely fishes, but feeds mainly on grasshoppers and other insects, to obtain which the flocks commonly associate with herds of cattle grazing" (Blyth 1852); "26. Bubulcus, Pucher.   85. ibis, Hasselq. (æquinoctialis, Mont. veranyi, Roux.)  86. ?ruficrista, Verr.  87. coromanda, Steph. (russata, Wagl. caboga, Sykes.)" (Bonaparte 1855); "Bubulcus Bonaparte (ex Pucheran MS), 1855 (April), Compt. Rend. Acad. Sci., Paris, 40, p. 722. Type, by tautonymy, Ardea ibis "Hasselquist" (= Linnaeus) = Ardea bubulcus Audouin." (Payne in Peters, 1979, I, 2nd ed., p. 205).
Var. Bubulcous. 

Med. L. bubulcus  cowherd  < L. bubulus  of cattle  < bos, bovis  cow (syn. Bubulcus ibis).

L. ibis, ibidis  ibis  < Gr. ιβις ibis, ιβιδος ibidos  ibis. The Greek authors recognised three different types of ibis: the Glossy Ibis, the Sacred Ibis, and the Northern Bald Ibis or Waldrapp.
● "76. ARDEA.  ...  Ibis.  18. A. capite lævi, corpore albo, rostro flavescente apice pedibusque nigris.  Ardea Ibis tota alba, pedibus atris, unguibus arcuatis maximis. Hasselqv. itin. 248.   β. Ibis nigra. Raj. av. 98.  Habitat in Ægypto; regionis purificator.  Bellonii Ibis rostro arcuato, nigra est; at Plinius X: 30. Ibis circa peluscum tantum nigra est, cæteris omnibus locis candida." (Linnaeus 1758). The Swedish explorer Fredrik Hasselqvist (1722-1752) was persuaded by his Egyptian dragoman that the Cattle Egret was, in fact, the sacred ibis of the ancients. His papers eventually found their way to Linnaeus, who unwittingly perpetuated the deception in the egret’s specific name (Bubulcus).
● ex “Ibis blanc” of Brisson 1760 (Mycteria).

L. ibis, ibidis  ibis   < Gr. ιβις ibis, ιβιδος ibidos  ibis. This name has been confused over the centuries. The Sacred Ibis was venerated by the ancient Egyptians, but the Glossy Ibis was equally common in that country. By the time modern ornithologists and explorers arrived the Sacred Ibis was either extinct or fast disappearing in Egypt, and the name gradually attached itself to other stork- or heron-like birds (for example, the Cattle Egret (see ibis)).
● (Threskiornithidae; ?syn. Eudocimus Ϯ Scarlet Ibis E. ruber) (see below)
● (Ciconiidae; syn. Mycteria Ϯ Yellow-billed Stork M. ibis) "117. IBIS, Ibis.  Bec long, fort, tranchant, et émoussé à son extrémité; des places dénuées de plumes sur la tête." (de Lacépède 1799); "Ibis Lacépède, Tabl. Ois., 1799, p. 18. Type, by tautonymy, Ibis candidus Daudin = Tantalus ibis Linné." (Peters, 1931, I, p. 126).
● (Threskiornithidae; syn. Plegadis Ϯ Glossy Ibis P. falcinellus) "80. EGYPTISE KRAAN, in 't Latyn Ibis,  By BELON. L. IV. c. IX.  SEBA Thes. I. t. 62 f.3." (Moehring 1758).  In effect, Moehring's name is unidentifiable.  Belon's 1555, plate illustrates the Glossy Ibis; his text refers both to the Glossy Ibis and to the Sacred Ibis.  Seba's 1735, plate illustrates the Scarlet Ibis (named Avis Porphyrio, Amboinensis).
Var. Jbis.
● (Threskiornithidae; ?syn. Threskiornis Ϯ Sacred Ibis T. aethiopicus) (see above)