The herons have developed a satellite colony near Kiwanis Ravine, down the hillside toward the Chittenden Locks in Commodore Park. There are about 8 nests there, and the herons seem pretty relaxed about people nearby, but viewers should be sensitive to the birds' need for privacy and protection from sudden, loud noises. Put yourself in their place! Below is a map of the site and some photos. Use controls to zoom in.
Commodore Nesting Grove: Use controls to zoom in.
Here are some pictures, taken in March, from the site: