Creature Feature: Who is the largest tern flying over the San Francisco Bay? And where can you find
- Sep 11, 2017
- 1 min read

A migratory bird to the San Francisco Bay area, the Caspian tern, has a worldwide range and is also the world’s largest tern. It is easily identified by its large coral beak and its size – which is as large as a big gull. This gull-like tern has a white body and a black cap.
Its genus name hudros means "water" in Ancient Greek, and progne means "swallow" in Latin. While its English name refers to the Caspian Sea.
Learn more about the Caspian tern in this week's Creature Feature (below).
The above picture showing Caspain terns is from the Crossley ID Guide Britain and Ireland.


Denise Mohsenin serves as the link between Marine Science Institute and the education community. She enjoys helping schools and teachers bring marine science and environmental literacy to their students. Her current favorite fish for teaching is the starry flounder. Ask her why at denise@sfbaymsi.org.







Wow, the Caspian tern is impressive—largest tern, big gull size, that coral beak really stands out. Speaking of big projects, if you're ever working on a roof, try the roofing calculator to figure out shingles and nails easily.
The Caspian tern is truly impressive—its size rivals a big gull and that coral beak stands out. Seeing one makes me want to take pictures and then use translate image ai to quickly read any tags or info I capture.
Wow, the Caspian tern really stands out with its huge coral beak—so cool to learn it's the largest tern around the Bay. Speaking of striking images, have you tried turning your bird photos into fun art with photo to cartoon It’s super easy and looks awesome.
Wow, the Caspian tern sounds amazing—largest tern with a coral beak! Seeing those birds makes me want to snap some photos and tweak them with ai image editor to bring out the colors. Thanks for the cool read!
What a cool fact about the Caspian tern being the biggest tern—its coral beak really stands out! Speaking of standout moves, I love using analysis chess to sharpen my game after a day of birdwatching. Thanks for the fun read!