Stafford Forge WMA 12/26--Trumpeter Swan

A few days ago, Trumpeter Swan popped up on my Rare Bird Alerts for Ocean County. With no photos attached and an unhelpful "This is a Trumpeter Swan" in the details box, my reaction was "Yeah, right."  The site, Stafford Forge WMA, often has Tundra Swans in the lake and since there has never been a Trumpeter Swan in Ocean (in fact, the only accepted records in NJ for Trumpeters that I know of were the birds at Assunpink that showed up for about 10 consecutive years, though not this year), I assumed it was a misidentification. It happens all the time. Last year someone swore he had 20 Trumpeters in Burlington County. They were Tundras. There have been reports of a Trumpeter at Whitesbog. I've gone to look--Tundra. 

But yesterday some pictures showed up on the alerts from birders I respect and the bird, an immature one, looked pretty good for Trumpeter. This morning, I drove down there and almost immediately found the bird in question, near 4 Mute Swans. Everything about the swan looked good for Trumpeter--a triangular, canvasback-like bill, a V at the base of the bill where it meets the head, pink at the base, black at the tip, a thick neck --save for the fact that it looked small. Trumpeter Swans are about the same size at Mute Swans. Tundra Swans are smaller. Compared to the Mute Swans this swan was, if anything, intermediate between them and a Tundra Swan. I was hoping that this wasn't an Extraordinary Popular Delusions and the Madness of Crowds situation, where everybody sees what they want to see. If I’d encountered this bird with no expectations, I probably would have assumed Tundra because it appeared on the smaller side. After checking references at home, I learned that Trumpeter cygnets don’t attain adult proportions until their second summer. Understanding that explained the apparent discrepancy, and I felt comfortable identifying it as a Trumpeter—a year bird and, even better, a life county bird.