Not calling or singing; but the open beak shows off his tactile mandible that allows him to probe the depths of the mudflats in search of little crustaceans. From Bunche Beach about this time last year. I think he must be partially molted into breeding plumage.
My kinda low angle shorebird frame! The bent beak is really cool, and the sharpness/detail is excellent across the bird, especially on the legs. He's just starting to molt in his breeding rufous!