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The indignant birds had been captured mid-combat as they fought over sunflower seeds left on a tree department.
Blackcaps, which breed in southern Germany and Austria, are more and more migrating in direction of Britain moderately than their conventional wintering grounds of Spain.
Other action-packed pictures present a pair of goldfinches coming to blows whereas two siskins are pictured squaring up to one another.
The astonishing photos had been captured by award-winning wildlife photographer Andrew Fusek Peters who hid seeds round his backyard.