Let me tell you what a barnacle goose is:

A barnacle goose is a type of bird - Branta leucopsis. Well, you might think it was a mildly amusing coincidence that there are crustaceans called goose barnacles - genus Lepas. Haha! However, it turns out that these two animals share a very interesting history, because many years ago, people used to think that barnacle geese came from goose barnacles! European monks used to see barnacle geese while they were in Britain for the winter, but didn't know where exactly they went during the spring (a.k.a. migration). Their explanation for the missing birds in the spring was that they were in fact busy developing inside of the "eggs" attached to logs by the ocean. Conveniently, these barnacles had little feathery appendages for feeding, as well as a little beak-like foot they used to attach to the logs. The thought was that birds would develop inside the barnacles, be released into the sea to mature, and make it to Britain by winter. According to the Smithsonian National Zoological Park, there was a surgeon (!) and botanist named John Gerarde who examined L. anatifera barnacles and wrote about the stages of developing birds he saw inside the little crustaceans. And here's the really funny part: the Smithsonian says that, "During fast times, the Catholic church forbade meat consumption, but monks made an exception of barnacle geese because they were of the sea and therefore fish, not fowl."

Here's the article from the Smithsonian about how geese=fish: http://nationalzoo.si.edu/Animals/Whats_in_a_name/default.cfm?id=3

Ok. That's it for now!

The picture above is from Wikipedia. I figured out how to post a picture!!!