I've compared the seagulls on #666 and #667. The ones on 666 have their wings canted upward slightly as can be seen in John's photo. However the gull on the lighthouse was put on slightly titled so one wing sticks up at an angle and the other is level. Neither one sticks straight out from the body. The gull on the rocks is level so that even though the wings stick up slightly, they are even with each other. (As I look more closly, it appears that the left wing of the gull on the lighthouse is canted more than the right wing.)
Number 667 has both gulls with the wings sticking straight out from the body as seen in Paul's photos.

I'm planning to go to Atlanta so maybe I can get some info about this from the folks at HL. Until then I'll just wing it.

AB in Ala-bam