Photo: Swallowtail parks on the milkweed

322 of 1170
322 of 1170

Beautiful flower, pretty butterfly, cutest face ever!

Butterflies are generally regarded for their beauty – the stained glass wings, the graceful fluttering – but sorry, look at this one's face. It's just really very cute.

While milkweed is usually associated with the monarch butterfly who relies on it for laying eggs, swallowtails and others enjoy it for its nectar ... as this one photographed by Peter Prehn seems to be doing. So pretty. (And cute!)

Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on flickr and add your pictures to the group.