Pallas's grasshopper warbler (Helopsaltes certhiola), also known as the rusty-rumped warbler, is named after Prussian Peter Simon Pallas – a zoologist who explored Russia, Siberia, the Ural, Caspian Sea, Altai Mountains. A very rare vagrant to western Europe and very difficult to see, it typically buries itself deep in tangled vegetation, usually close to water in bogs or wet meadows. Pallas’s Grasshopper warbler is one of the most sought after of Siberian vagrants to reach Britain and Europe – so this was a special treat to see it in the Medoc, France.