This tiny warbler with its brown back & lighter buff underside arrives in mid-April.
It builds tiny nests between 4 or 5 reed stems along the banks of the lodes, ditches or in the reedbeds.
At Wicken Fen, reed warblers’ nests can be parasitised by female cuckoos, who remove a warbler’s egg and lay one of their own, leaving the warblers to rear the chick when it hatches. Why the warblers rear a chick that is so much bigger than themselves is one of the mysteries of nature.
Sedge Warbler