The sheldgeese are a genus (Chloephaga) of birds in the family Anatidae.
Chloephaga: Greek: χλοη khloē "young green grass"; -φαγος -phagos "-eating", from φαγειν phagein "to eat".
Based on the Taxonomy in Flux from John Boyd's website.
C. poliocephala Sclater 1857 (Ashy-headed goose)
C. rubidiceps Sclater 1861 (Ruddy-headed goose)
C. picta (Gmelin 1789) (Upland/Magellan goose)
C. hybrida (Molina 1782) (Kelp goose)