Savi's Warbler Locustella luscinoides

Savi's warbler is right on the edge of its range here, and its numbers have always been very low and difficult to see in the UK. Like most of this family, it is heard before it is seen, with a similar song to the grasshopper warbler but less persistent. Image: Sergey Yeliseev (Flickr).

Find out more: RSPB, iNaturalist