The Collaborative International Dictionary
Wrybill
Wrybill \Wry"bill`\, n. (Zo["o]l.) See Crookbill.
Wiktionary
wrybill
n. ''Anarhynchus frontalis'', a species of small bird in the plover family Charadriidae, unique in having a beak that is bent sideways, endemic to New Zealand.
Wikipedia
Wrybill
The wrybill or ngutuparore ( Māori) Anarhynchus frontalis is a species of plover endemic to New Zealand. It is unique in that it is the only species of bird in the world with a beak that is bent sideways (always to the right).
It lays its eggs among the rocks along rivers and distracts intruders by pretending to be in distress and moving away from its "nest".