calyptura means the passerine bird Calyptura cristata. Lexicurio rates it Sui generis — a strength score of 96 out of 100.
Etymology
From the genus name.
noun
- The passerine bird Calyptura cristata.“As if both to annoy […] and to delight […] the authors, the calyptura revealed its presence once more in the very same year that Brooks and Balmford published their work.”