Why don't butterflies fly in straight lines? - BBC Science Focus Magazine

The butterfly’s erratic flight is actually an evolutionary tactic that makes it harder for any would-be predators to predict the insect’s flightpath.

Moving for Monarchs

What's the difference between a moth and a butterfly? - BBC

PDF: Low-resolution (8Mb) - Craft Focus Magazine

Moving for Monarchs

Beautiful Monarch Butterfly Flying Isolated On White Background

What's the difference between a moth and a butterfly? - BBC

Monarch butterfly's spots help it migrate - study

Great monarch butterfly migration mystery solved - BBC News

Scientists warn of the decline of butterflies in the UK

Insects could vanish within a century at current rate of decline

Butterflies: Scientists explain how they fly! - BBC Newsround