A quick and easy reference on how tell the difference between the Snowy and Great Egrets, both white and both often times found feeding in the marsh and tide pools together: The Great Egret is greater in size and has a bright yellow bill, with black legs and black feet. The smaller Snowy Egret has the opposite markings, with unmistakeable cadmium yellow feet and a black bill.
In the above photo taken this morning, the egrets were too far away for my camera’s lens to get a really clear picture however, when cropped, you can see a side-by-side comparison. The Snowy Egret, with black bill and bright yellow feet, is flying in the background and the Great Egret, with black feet and yellow bill, is perched in the foreground.
More posts about Great Egret and Snowy Egrets: BIRDS OF CAPE ANN: GREAT EGRET VS. GREAT EGRET BEAUTIFUL GOOD HARBOR FOGGY MORNING SUNRISE, SNOWY EGRET, AND WHIMBRELS