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Penguins swap pebbles to mark start of breeding season

YOU’D have a heart of stone not to be moved — penguins at a zoo have started swapping pebbles to mark the start of the annual breeding season.

Gentoo penguins have been sorting through piles left in their enclosure at Edinburgh Zoo hunting for the prettiest and shiniest to present to potential mates.

Occasionally they may ruffle feathers by stealing a neighbour’s.

After successfully finding a mate and filling the nest with pebbles, the first eggs should appear in April and hatch in May.

Not all penguins mate for life and same-sex partnerships, who have been given eggs to rear, are not uncommon.