You've likely seen them along the water, perching perfectly still with long legs and an "S" shaped neck. You may have seen them quickly snag a fish. Few people have seen where they nest and have young. Herons build nests in colonies, usually high up in mature sycamore trees along streams. Look for several large nests grouped in a single tree. This time of year, you will see them flying around as they build, repair, and protect the nests. Learn more about herons and their hood, called "rookeries" in this week's Discover Nature Note.