Wailing Pacific Loon

Photo by Dave Kemp

My British Columbia friend Dave Kemp, from the Pacific coastal community of Richmond sent me this interesting picture of an Pacific Loon (Gavia pacifica) which he recently photographed.   I say interesting because I don't recall ever seeing a loon yodeling with its head pointed straight upward.   I went to Google and quickly viewed hundreds of photos of Pacific Loons, but did not see one shot with a wide-open beak pointed straight skyward.   I doubt there's anything unique about this behaviour, but it is an uncommon perspective which caught my eye.   Oh, to have heard its high-pitched cry.
Please comment if you wish.
BtheB