10 CETTI’S WAR­BLER

Bird Watching (UK) - - Destination London -

Un­known in the UK un­til 1961, the northerly ex­pan­sion of the Cetti’s War­bler has brought this species into London (and be­yond). It is an un­ob­tru­sive and skulk­ing lit­tle bird, most eas­ily iden­ti­fied by its sud­den ex­plo­sive song. Most war­blers leave our shores in the win­ter, head­ing for warmer climes, but the Cetti’s War­bler, and in­creas­ingly the Black­cap, stay on. As our cli­mate changes we can ex­pect more range shifts as species ad­just. As with pre­vi­ous en­vi­ron­men­tal changes in London, this could spell op­por­tu­nity for some species but dis­as­ter for oth­ers. London’s birdlife is any­thing but static and has some sur­prises in store for those who visit or who, like the Cetti’s War­bler and my­self, de­cide to stay. Turn back to page 48 for Do­minic Couzens on Cetti’s War­bler.

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