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Here are the top photos sent in by you, our readers, for the fourth round of our Photographer of the Year competition. The theme was the 'Natural world'. The winner voted by you to go through to the final was 'Squabbling Terns' by Veronica Carter.

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'Shadow' by Andrew Fleetwood also qualifies for the final round.

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'Polar bears' by Lisa Vogt came third - the following entries entries appear in alphabetical order.

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'Eastnor Lake' by Phil Callow

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'Raccoons' by Therese Davis

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'Badger cub' by Nick Lyon

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'Gator' by Neil Mealey

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'Summer Visitor' by Alex Teselsky

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'Tiger behind chain link' by Thornton

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'Hunger' by Felix Wong

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'Freiherr B�se' by Marek Wozniak

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'Echinacea' by Tanya Zielke