Kids in hospital help penguins woo mates with painted pebbles

The penguins crowded astir a greenish wheelbarrow, anxious to spot what was making the clattering sound inside.

Moments later, much than 1,000 colorful pebbles dropped onto their habitat’s pavement. Each pebble was hand-painted with a design, from flowers and rainbows to logos for Spider-Man and Scottish shot teams.