A small, dark-crowned warbler, Acrocephalus melanopogon (family Sylviidae), inhabiting reed beds and swamps in southern and central Europe, the Middle East, and North Africa.
Origin
Mid 19th century; earliest use found in John Gould (1804–1881), ornithologist and publisher.
Definition of moustached warbler in US English:
moustached warbler
noun
A small, dark-crowned warbler, Acrocephalus melanopogon (family Sylviidae), inhabiting reed beds and swamps in southern and central Europe, the Middle East, and North Africa.
Origin
Mid 19th century; earliest use found in John Gould (1804–1881), ornithologist and publisher.