During our 23 March 2016 visit to the St. Marks National Wildlife Refuge, we saw about a half-dozen species of herons and egrets. Among them were these three, a Tricolored Heron (first photo), a Little Blue Heron (middle photo), and a Snowy Egret. The Tricolored Heron is recognized by its white belly. The Little Blue is uniformly dark—unless it is in its white, juvenile plumage, which tends to complicate matters. Finally, the Snowy Egret has a black, needle-like bill and yellow toes. I have linked the names of these herons to a few of my previous posts.