Editing Tree warbler (section)

{{Short description|Group of birds}}
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{{Automatic taxobox
| name = Tree warblers
| image = Hypolais.jpg
| image_caption = Several ''[[Hippolais]]'' species
| taxon = Acrocephalidae
}}

'''Tree warblers''' are medium-sized [[warbler]]s in the marsh- and tree-warbler family [[Acrocephalidae]]. They are found in [[Europe]], [[Africa]] and western [[Asia]].<ref>{{cite book|editor1=Del Hoyo, J. |editor2=Elliot, A. |editor3=Christie D.|year=2006|title=Handbook of the Birds of the World. Volume 11: Old World Flycatchers to Old World Warblers|publisher= Lynx Edicions|isbn= 84-96553-06-X}}</ref> Until recently, they were all classified in the single [[genus]] ''[[Hippolais]]''.

These warblers are associated with trees, though normally in fairly open woodland rather than tight plantations. Compared with the closely related ''[[Acrocephalus (bird)|Acrocephalus]]'' species, tree warblers have squarer tails and broader bill-bases. Most are unstreaked greenish or brownish above and cream or white below. They are [[insectivorous]], but will occasionally take [[Berry|berries]] or [[seed]]s. The species breeding in temperate regions are mostly strongly [[bird migration|migratory]].<ref>{{cite book|last1=Mullarney|first1=K.|last2=Svensson|first2= L.|last3=Zetterström|first3= D.|last4= Grant|first4= P. J. |year=1999|title=Collins Bird Guide|publisher=HarperCollins|isbn= 0-00-219728-6|title-link=Collins Bird Guide}}</ref>