Darwin spotted that different shaped beaks had evolved to help finches eat more of their favourite food in particular locations.

We didn’t have finch beaks but we did have chopsticks, tweezers and tongs. Children had to test how effective each ‘beak substitute’ was at picking up a variety of food types from sunflower seeds to blueberries. The chopsticks were particularly challenging but we could see how having the right shaped beak could help a finch to survive!