redbill
/ˈrɛdbɪl/noun
1Chiefly Australian and NZ. Any of several birds having a red bill; specifically (a) an oystercatcher (genus Haematopus); (b) the purple swamphen, Porphyrio porphyrio.
2 South African. The common waxbill, Estrilda astrild. Compare red-beak, rooibekkie. Now rare.
Origin
Mid 18th century; earliest use found in George Robertson (?1750–1832), writer on agriculture and topographer. From red + bill.