Nutrition
As an adult, the Canadian tiger swallowtail, like most
butterflies, eats the nectar from flowering plants. While in the
larval, or caterpillar stage, they will eat the leaves of the
trees in their habitat (Opler et al., 2012). Information on the
Canadian tiger swallowtail's habitat can be found
here.
Nectar is a great food for butterflies. It is a sugary liquid
that can often be found in the flowers of various plants. This
high-energy food provides butterflies with the nutrition they
need to power their muscles for flight (Schlaepfer,
2006).
Some butterflies will also snack on a few unlikely food sources,
such as rotting fruits and vegetables. Because their proboscis
is so narrow, the more liquid the food is, the better (Schlaepfer,
2006). Swallowtails have even been seen feeding on dung!
Which doesn't seem very pleasant, considering that butterflies
smell with their antennae and can taste with their feet (Simon,
2011).
If you are interested in inviting the Canadian tiger
swallowtail, or any butterflies, into your garden, be sure to
plant a wide variety of plants and flowers so that there is at least one
kind in bloom throughout the warm months, from early spring to
late autumn (Simon, 2011)