Butterflies are really cool. Eastern Tailed Blue, Marine Blue, Bog Elfin and the Small Checkered Skipper all share top honours for Canada's smallest butterflies at wing a span of 16mm. Worldwide the smallest are the Pygmy butterflies at 11mm. The Mourning Cloak has been known to play dead in order to escape predators. Mourning Cloaks and Compton Tortoiseshells frequently feed at Sapsucker drillings.
Butterflies smell with their antennae.
The Painted Lady is the most wide spread butterfly species in the world. Occurring on all continents accept South American and Antarctica. Skipper antennae are filament like with a slight hook on the end. If the scales are removed from a butterfly's wing what is left is a transparent membrane. The Karner Blue butterfly became extirpated in Ontario around 1991.