An immature Franklin’s Gull graced Montrose Beach on May 5. Franklin’s Gulls are uncommon but regular spring migrants at Montrose; most occur in late April and early May. The best way to look for them is to scan the flocks of gulls and terns that gather on the beach. This advice also applies to other, less common gulls, like Laughing, which also start to appear in late spring.
On a related side note, you should think about checking the beach in the afternoon and evening, especially the protected beach. Gulls, terns, and shorebirds settle down later in the day and you could find something unusual among the more common Herring and Ring-billed Gulls. The protected beach is fenced off on all sides and inaccessible to people and dogs, so the birds that end up there feel safer and tend to hang around.