What, you thought we would never use that pun? About a week ago, we noted the first sighting of a California Least Tern in San Diego. Well, there have been several sightings since, indicating that the bird is making its annual push into the Golden State. Today, we were talking with one of our experts and trying to get idea of how one would tell an endangered California Least Tern from a regular Least Tern, and the response was pretty much whether or not you saw it in California. The listing for this species is based considerably on the threatened population, rather than the species. It is the California birds that are endangered. So, although there will certainly be exceptions, if you see a Least Tern in California, it will likely be a California Least Tern, and thus endangered. Does that make any sense?